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Update reference docs for count() to include heterogeneous overloads

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This commit is contained in:
Christian Mazakas
2022-01-06 15:28:07 -08:00
parent cd56cae032
commit 49b630c2d4
1 changed files with 28 additions and 6 deletions
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34
doc/ref.php
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@ -1348,15 +1348,37 @@ EOL;
</para>
</notes>
</overloaded-method>
<method name="count" cv="const">
<parameter name="k">
<paramtype>key_type const&amp;</paramtype>
</parameter>
<type>size_type</type>
<overloaded-method name="count">
<signature cv="const">
<parameter name="k">
<paramtype>key_type const&amp;</paramtype>
</parameter>
<type>size_type</type>
</signature>
<signature cv="const">
<template>
<template-type-parameter name="K" />
</template>
<parameter name="k">
<paramtype>K const&amp;</paramtype>
</parameter>
<type>size_type</type>
</signature>
<returns>
<para>The number of elements with key equivalent to <code>k</code>.</para>
</returns>
</method>
<notes>
<para>
The <code>template &lt;typename K&gt;</code> overload only participates
in overload resolution if <code>Hash::is_transparent</code> and
<code>Pred::is_transparent</code> are valid member typedefs. The
library assumes that <code>Hash</code> is callable with both
<code>K</code> and <code>Key</code> and that <code>Pred</code> is
transparent. This enables heterogeneous lookup which avoids the cost of
instantiating an instance of the <code>Key</code> type.
</para>
</notes>
</overloaded-method>
<overloaded-method name="equal_range">
<signature>
<parameter name="k">