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Reference-manual_elementary_str.html
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<!DOCTYPE html>
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<h1 id="string-str">String (<code>str</code>)</h1>
<p>All <a href="Syntax.html#strings">strings</a> have the following methods. Strings
are immutable, all operations return their results as a new string.</p>
<h2 id="returned-by">Returned by</h2>
<p>String objects are returned by the following functions and methods:</p>
<ul>
<li><a href="Reference-manual_functions.html#get_option"><ins><code>get_option()</code></ins></a></li>
<li><a href="Reference-manual_functions.html#join_paths"><ins><code>join_paths()</code></ins></a></li>
<li><a href="Reference-manual_elementary_bool.html#boolto_string"><ins><code>bool.to_string()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machinecpu"><ins><code>build_machine.cpu()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machinecpu_family"><ins><code>build_machine.cpu_family()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machineendian"><ins><code>build_machine.endian()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machinekernel"><ins><code>build_machine.kernel()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machinesubsystem"><ins><code>build_machine.subsystem()</code></ins></a></li>
<li><a href="Reference-manual_builtin_build_machine.html#build_machinesystem"><ins><code>build_machine.system()</code></ins></a></li>
<li><a href="Reference-manual_returned_build_tgt.html#build_tgtfull_path"><ins><code>build_tgt.full_path()</code></ins></a></li>
<li><a href="Reference-manual_returned_build_tgt.html#build_tgtname"><ins><code>build_tgt.name()</code></ins></a></li>
<li><a href="Reference-manual_returned_build_tgt.html#build_tgtpath"><ins><code>build_tgt.path()</code></ins></a></li>
<li><a href="Reference-manual_returned_cfg_data.html#cfg_dataget"><ins><code>cfg_data.get()</code></ins></a></li>
<li><a href="Reference-manual_returned_cfg_data.html#cfg_dataget_unquoted"><ins><code>cfg_data.get_unquoted()</code></ins></a></li>
<li><a href="Reference-manual_returned_compiler.html#compilerget_argument_syntax"><ins><code>compiler.get_argument_syntax()</code></ins></a></li>
<li><a href="Reference-manual_returned_compiler.html#compilerget_define"><ins><code>compiler.get_define()</code></ins></a></li>
<li><a href="Reference-manual_returned_compiler.html#compilerget_id"><ins><code>compiler.get_id()</code></ins></a></li>
<li><a href="Reference-manual_returned_compiler.html#compilerget_linker_id"><ins><code>compiler.get_linker_id()</code></ins></a></li>
<li><a href="Reference-manual_returned_compiler.html#compilerversion"><ins><code>compiler.version()</code></ins></a></li>
<li><a href="Reference-manual_returned_custom_idx.html#custom_idxfull_path"><ins><code>custom_idx.full_path()</code></ins></a></li>
<li><a href="Reference-manual_returned_custom_tgt.html#custom_tgtfull_path"><ins><code>custom_tgt.full_path()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depget_configtool_variable"><ins><code>dep.get_configtool_variable()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depget_pkgconfig_variable"><ins><code>dep.get_pkgconfig_variable()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depget_variable"><ins><code>dep.get_variable()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depinclude_type"><ins><code>dep.include_type()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depname"><ins><code>dep.name()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#deptype_name"><ins><code>dep.type_name()</code></ins></a></li>
<li><a href="Reference-manual_returned_dep.html#depversion"><ins><code>dep.version()</code></ins></a></li>
<li><a href="Reference-manual_returned_external_program.html#external_programfull_path"><ins><code>external_program.full_path()</code></ins></a></li>
<li><a href="Reference-manual_returned_external_program.html#external_programpath"><ins><code>external_program.path()</code></ins></a></li>
<li><a href="Reference-manual_returned_external_program.html#external_programversion"><ins><code>external_program.version()</code></ins></a></li>
<li><a href="Reference-manual_returned_file.html#filefull_path"><ins><code>file.full_path()</code></ins></a></li>
<li><a href="Reference-manual_elementary_int.html#intto_string"><ins><code>int.to_string()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonbackend"><ins><code>meson.backend()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonbuild_options"><ins><code>meson.build_options()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonbuild_root"><ins><code>meson.build_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesoncurrent_build_dir"><ins><code>meson.current_build_dir()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesoncurrent_source_dir"><ins><code>meson.current_source_dir()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonglobal_build_root"><ins><code>meson.global_build_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonglobal_source_root"><ins><code>meson.global_source_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonproject_build_root"><ins><code>meson.project_build_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonproject_name"><ins><code>meson.project_name()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonproject_source_root"><ins><code>meson.project_source_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonproject_version"><ins><code>meson.project_version()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonsource_root"><ins><code>meson.source_root()</code></ins></a></li>
<li><a href="Reference-manual_builtin_meson.html#mesonversion"><ins><code>meson.version()</code></ins></a></li>
<li><a href="Reference-manual_returned_runresult.html#runresultstderr"><ins><code>runresult.stderr()</code></ins></a></li>
<li><a href="Reference-manual_returned_runresult.html#runresultstdout"><ins><code>runresult.stdout()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strformat"><ins><code>str.format()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strjoin"><ins><code>str.join()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strreplace"><ins><code>str.replace()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strstrip"><ins><code>str.strip()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strsubstring"><ins><code>str.substring()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strto_lower"><ins><code>str.to_lower()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strto_upper"><ins><code>str.to_upper()</code></ins></a></li>
<li><a href="Reference-manual_elementary_str.html#strunderscorify"><ins><code>str.underscorify()</code></ins></a></li>
</ul>
<h2 id="string-methods">String methods</h2>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strcontains">str.contains()</h3>
<p>Returns <code>true</code> if string contains the string specified as the argument.</p>
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<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
</div>
</div>
</div>
<pre><code class="language-meson"># Returns `true` if string contains the string specified as the argument
<a href="Reference-manual_elementary_bool.html"><ins>bool</ins></a> contains(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#contains_fragment"><b>fragment</b></a>, # The string fragment to check
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example">Example</h4>
<pre><code class="language-meson">target = 'x86_FreeBSD'
is_fbsd = target.to_lower().contains('freebsd')
# is_fbsd now has the boolean value 'true'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments">Arguments</h4>
<p>The method <code>str.contains()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="contains_fragment">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">fragment</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The string fragment to check</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
</tbody>
</table>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strendswith">str.endswith()</h3>
<p>Returns true if string ends with the string specified as the argument.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature1">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
</div>
</div>
</div>
<pre><code class="language-meson"># Returns true if string ends with the string specified as the argument
<a href="Reference-manual_elementary_bool.html"><ins>bool</ins></a> endswith(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#endswith_fragment"><b>fragment</b></a>, # The string fragment to check
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example1">Example</h4>
<pre><code class="language-meson">target = 'x86_FreeBSD'
is_bsd = target.to_lower().endswith('bsd') # boolean value 'true'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments1">Arguments</h4>
<p>The method <code>str.endswith()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="endswith_fragment">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">fragment</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The string fragment to check</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
</tbody>
</table>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strformat">str.format()</h3>
<p>Strings can be built using the string formatting functionality.</p>
<p>See <a href="Syntax.html#string-formatting">the Meson syntax entry</a> for more
information.</p>
<p><em>Since 1.3.0</em> values other than strings, integers, bools, options,
dictionaries and lists thereof are deprecated. They were previously printing
the internal representation of the raw Python object.</p>
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<h4 style="margin-top: 0px;" id="signature2">Signature</h4>
<div style="flex-grow: 1;"></div>
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</div>
</div>
</div>
<pre><code class="language-meson"># Strings can be built using the string formatting functionality
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> format(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#format_fmt"><b>fmt</b></a>, # The string to format
<a href="Reference-manual_elementary_int.html"><ins>int</ins></a> | <a href="Reference-manual_elementary_bool.html"><ins>bool</ins></a> | <a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <b>value</b>..., # The values to replace the @number@ placeholders in the format string
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example2">Example</h4>
<pre><code class="language-meson">template = 'string: @0@, number: @1@, bool: @2@'
res = template.format('text', 1, true)
# res now has value 'string: text, number: 1, bool: true'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments2">Arguments</h4>
<p><a href="Syntax.html#argument-flattening">Argument flattening</a> is <strong>NOT SUPPORTED</strong> by this function.</p>
<p>The method <code>str.format()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center;">Name</th>
<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="format_fmt">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">fmt</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The string to format.</p>
<p>The formatting works by replacing placeholders of type <code>@number@</code> with
the corresponding varargs.</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
</tbody>
</table>
<p style="padding: 5px; margin: 0px;"></p> <!-- Extra space -->
<p>Additionally, the
method accepts between <code>0</code> and <code>infinity</code> variadic
arguments (<code>value...</code>) of type <code><a href="Reference-manual_elementary_int.html"><ins><code>int</code></ins></a> | <a href="Reference-manual_elementary_bool.html"><ins><code>bool</code></ins></a> | <a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></code>.</p>
<p>The values to replace the @number@ placeholders in the format string.</p>
<div style="margin: 0px; text-align: center;">
</div>
<p style="padding: 5px; margin: 0px;"></p> <!-- Extra space -->
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strjoin">str.join()</h3>
<p>The opposite of split,
for example <code>'.'.join(['a', 'b', 'c']</code> yields <code>'a.b.c'</code>.</p>
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<h4 style="margin-top: 0px;" id="signature3">Signature</h4>
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<div>
<div style="margin: 0px; text-align: center;">
</div>
</div>
</div>
<pre><code class="language-meson"># The opposite of split,
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> join(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <b>strings</b>..., # The strings to join with the current string
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example3">Example</h4>
<pre><code class="language-meson"># Similar to the Python str.join()
output = ' '.join(['foo', 'bar'])
# Output value is 'foo bar'
pathsep = ':'
path = pathsep.join(['/usr/bin', '/bin', '/usr/local/bin'])
# path now has the value '/usr/bin:/bin:/usr/local/bin'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments3">Arguments</h4>
<p>The
method accepts between <code>0</code> and <code>infinity</code> variadic
arguments (<code>strings...</code>) of type <code><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></code>.</p>
<p>The strings to join with the current string.</p>
<p>Before Meson <em>0.60.0</em> this function only accepts a single positional
argument of the type [[list[str]]].</p>
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 0.60.0)</em></p>
</div>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strreplace">str.replace()</h3>
<p>Search all occurrences of <code>old</code> and replace it with <code>new</code></p>
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<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature4">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 0.58.0)</em></p>
</div>
</div>
</div>
<pre><code class="language-meson"># Search all occurrences of `old` and replace it with `new`
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> replace(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#replace_old"><b>old</b></a>, # The substring to search
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#replace_new"><b>new</b></a>, # The replacement string
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example4">Example</h4>
<pre><code class="language-meson"># Replaces all instances of one substring with another
s = 'semicolons;as;separators'
s = s.replace('as', 'are')
# 's' now has the value of 'semicolons;are;separators'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments4">Arguments</h4>
<p>The method <code>str.replace()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="replace_old">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">old</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The substring to search</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
<tr id="replace_new">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">new</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The replacement string</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
</tbody>
</table>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strsplit">str.split()</h3>
<p>Splits the string at the specified character
(or whitespace if not set) and returns the parts in an
array.</p>
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<h4 style="margin-top: 0px;" id="signature5">Signature</h4>
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</div>
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</div>
<pre><code class="language-meson"># Splits the string at the specified character
<a href="Reference-manual_elementary_list.html"><ins>list</ins></a>[<a href="Reference-manual_elementary_str.html"><ins>str</ins></a>] split(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> [<a href="Reference-manual_elementary_str.html#split_split_string"><b>split_string</b></a>], # Specifies the character / substring where to split the string
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example5">Example</h4>
<pre><code class="language-meson"># Similar to the Python str.split()
components = 'a b c d '.split()
# components now has the value ['a', 'b', 'c', 'd']
components = 'a b c d '.split(' ')
# components now has the value ['a', 'b', '', '', 'c', 'd', '']
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments5">Arguments</h4>
<p>The method <code>str.split()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="split_split_string">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">split_string</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>Specifies the character / substring where to split the string.</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><b>[optional]</b></p>
</div>
</td>
</tr>
</tbody>
</table>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strsplitlines">str.splitlines()</h3>
<p>Splits the string into an array of lines.
Unlike .split('\n'), the empty string produced an empty array,
and if the string ends in a newline, splitlines() doesn't split
on that last newline.
'\n', '\r' and '\r\n' are all considered newlines.</p>
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<h4 style="margin-top: 0px;" id="signature6">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 1.2.0)</em></p>
</div>
</div>
</div>
<pre><code class="language-meson"><a href="Reference-manual_elementary_list.html"><ins>list</ins></a>[<a href="Reference-manual_elementary_str.html"><ins>str</ins></a>] splitlines()</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example6">Example</h4>
<pre><code class="language-meson">output = 'hello\nworld\n'.splitlines()
# Output value is ['hello', 'world']
output = ''.splitlines()
# Output value is []
fs = import('fs')
paths = fs.read('my_paths.list').splitlines()
# paths is now the paths listed in 'my_paths.list', or an empty list
# if 'my_paths.list' is empty
</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strstartswith">str.startswith()</h3>
<p>Returns true if string starts with the string specified as the argument.</p>
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<h4 style="margin-top: 0px;" id="signature7">Signature</h4>
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</div>
<pre><code class="language-meson"># Returns true if string starts with the string specified as the argument
<a href="Reference-manual_elementary_bool.html"><ins>bool</ins></a> startswith(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#startswith_fragment"><b>fragment</b></a>, # The string fragment to check
)</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="example7">Example</h4>
<pre><code class="language-meson">target = 'x86_FreeBSD'
is_x86 = target.startswith('x86') # boolean value 'true'
</code></pre>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit more space -->
<h4 id="arguments6">Arguments</h4>
<p>The method <code>str.startswith()</code> accepts the following positional arguments:</p>
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<tr>
<th style="white-space: nowrap; text-align: center;">Name</th>
<th style="white-space: nowrap; text-align: center;">Type</th>
<th style="width: 56%;">Description</th>
<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
</thead>
<tbody class="nomargin">
<tr id="startswith_fragment">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">fragment</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>The string fragment to check</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
</div>
</td>
</tr>
</tbody>
</table>
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<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strstrip">str.strip()</h3>
<p>Removes leading/ending characters from the string.</p>
<p>By default the characters to remove are spaces and newlines.</p>
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<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature8">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
</div>
</div>
</div>
<pre><code class="language-meson"># Removes leading/ending characters from the string
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> strip(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> [<a href="Reference-manual_elementary_str.html#strip_strip_chars"><b>strip_chars</b></a>], # Instead of whitespace, strip all the characters in this string
)</code></pre>
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<h4 id="example8">Example</h4>
<pre><code class="language-meson"># Similar to the Python str.strip(). Removes leading/ending spaces and newlines
define = ' -Dsomedefine '
stripped_define = define.strip()
# 'stripped_define' now has the value '-Dsomedefine'
</code></pre>
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<h4 id="arguments7">Arguments</h4>
<p>The method <code>str.strip()</code> accepts the following positional arguments:</p>
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<tr id="strip_strip_chars">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">strip_chars</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_str.html"><ins><code>str</code></ins></a></td>
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<td style="width: 56%; padding: 6px;">
<p>Instead of whitespace, strip all the characters in this string.</p>
</td>
<td style="white-space: nowrap; text-align: center; padding: 6px; width: 0px;">
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 0.43.0)</em></p>
<p style="margin: 0px;"><b>[optional]</b></p>
</div>
</td>
</tr>
</tbody>
</table>
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<h3 id="strsubstring">str.substring()</h3>
<p>Returns a substring specified from <code>start</code> to <code>end</code>.
Both <code>start</code> and <code>end</code> arguments are optional, so, for example, <code>'foobar'.substring()</code> will return <code>'foobar'</code>.</p>
<p>The method accepts negative values where negative <code>start</code> is relative to the end of
string <code>len(string) - start</code> as well as negative <code>end</code>.</p>
<p>If <code>start</code> or <code>end</code> are out of bounds, the position of the closest character will be used.
If <code>start</code> is bigger than <code>end</code>, the result will be an empty substring.</p>
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<p style="margin: 0px;"><em style="color: #5affff;">(since 0.56.0)</em></p>
</div>
</div>
</div>
<pre><code class="language-meson"># Returns a substring specified from `start` to `end`
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> substring(
<a href="Reference-manual_elementary_int.html"><ins>int</ins></a> [<a href="Reference-manual_elementary_str.html#substring_start"><b>start</b></a>], # The start position
<a href="Reference-manual_elementary_int.html"><ins>int</ins></a> [<a href="Reference-manual_elementary_str.html#substring_end"><b>end</b></a>], # The end position
)</code></pre>
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<h4 id="example9">Example</h4>
<pre><code class="language-meson"># Similar to the Python str[start:end] syntax
target = 'x86_FreeBSD'
platform = target.substring(0, 3) # prefix string value 'x86'
system = target.substring(4) # suffix string value 'FreeBSD'
</code></pre>
<p>Example with negative values:</p>
<pre><code class="language-meson">string = 'foobar'
string.substring(-5, -3) # => 'oo'
string.substring(1, -1) # => 'ooba'
</code></pre>
<p>Example with out of bound values:</p>
<pre><code class="language-meson">string = 'foobar'
string.substring(64) # => ''
string.substring(0, 64) # => 'foobar'
string.substring(64, 0) # => ''
</code></pre>
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<h4 id="arguments8">Arguments</h4>
<p>The method <code>str.substring()</code> accepts the following positional arguments:</p>
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<th style="white-space: nowrap; text-align: center; width: 0px;">Tags</th>
</tr>
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<tr id="substring_start">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">start</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_int.html"><ins><code>int</code></ins></a></td>
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<p>The start position</p>
</td>
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<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><b>[optional]</b></p>
</div>
</td>
</tr>
<tr id="substring_end">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">end</code></td>
<td style="white-space: revert; text-align: center; padding: 6px; word-wrap: break-word;"><a href="Reference-manual_elementary_int.html"><ins><code>int</code></ins></a></td>
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<p>The end position</p>
</td>
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<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><b>[optional]</b></p>
</div>
</td>
</tr>
</tbody>
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<h3 id="strto_int">str.to_int()</h3>
<p>Converts the string to an int and throws an error if it can't be</p>
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<pre><code class="language-meson"><a href="Reference-manual_elementary_int.html"><ins>int</ins></a> to_int()</code></pre>
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<h4 id="example10">Example</h4>
<pre><code class="language-meson">version = '1'
# Converts the string to an int and throws an error if it can't be
ver_int = version.to_int()
</code></pre>
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<hr>
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<h3 id="strto_lower">str.to_lower()</h3>
<p>Converts all characters to lower case</p>
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<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> to_lower()</code></pre>
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<h4 id="example11">Example</h4>
<pre><code class="language-meson">target = 'x86_FreeBSD'
lower = target.to_lower() # t now has the value 'x86_freebsd'
</code></pre>
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<hr>
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<h3 id="strto_upper">str.to_upper()</h3>
<p>Converts all characters to upper case</p>
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<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> to_upper()</code></pre>
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<h4 id="example12">Example</h4>
<pre><code class="language-meson">target = 'x86_FreeBSD'
upper = target.to_upper() # t now has the value 'X86_FREEBSD'
</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="strunderscorify">str.underscorify()</h3>
<p>Creates a string where every non-alphabetical non-number character is replaced with <code>_</code>.</p>
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<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> underscorify()</code></pre>
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<h4 id="example13">Example</h4>
<pre><code class="language-meson">name = 'Meson Docs.txt#Reference-manual'
# Replaces all characters other than `a-zA-Z0-9` with `_` (underscore)
# Useful for substituting into #defines, filenames, etc.
underscored = name.underscorify()
# underscored now has the value 'Meson_Docs_txt_Reference_manual'
</code></pre>
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<hr>
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<h3 id="strversion_compare">str.version_compare()</h3>
<p>Does semantic version comparison.</p>
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<pre><code class="language-meson"># Does semantic version comparison
<a href="Reference-manual_elementary_bool.html"><ins>bool</ins></a> version_compare(
<a href="Reference-manual_elementary_str.html"><ins>str</ins></a> <a href="Reference-manual_elementary_str.html#version_compare_compare_string"><b>compare_string</b></a>, # The string to compare to
)</code></pre>
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<h4 id="example14">Example</h4>
<pre><code class="language-meson">version = '1.2.3'
# Compare version numbers semantically
is_new = version.version_compare('>=2.0')
# is_new now has the boolean value false
# Supports the following operators: '>', '<', '>=', '<=', '!=', '==', '='
</code></pre>
<p>Meson version comparison conventions include:</p>
<pre><code class="language-meson">'3.6'.version_compare('>=3.6.0') == false
</code></pre>
<p>It is best to be unambiguous and specify the full revision level to compare.</p>
<p><em>Since 1.8.0</em> multiple versions can be compared:</p>
<pre><code class="language-meson">'3.6'.version_compare('>=3', '<4.0') == true
</code></pre>
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<h4 id="arguments9">Arguments</h4>
<p>The method <code>str.version_compare()</code> accepts the following positional arguments:</p>
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<tr id="version_compare_compare_string">
<td style="white-space: nowrap; text-align: center; padding: 6px;"><code class="language-meson">compare_string</code></td>