[#absl-AlphaNum-2constructor-0f8]
= xref:absl.adoc[absl]::xref:absl/AlphaNum.adoc[AlphaNum]::AlphaNum
:relfileprefix: ../../
:mrdocs:

Constructs an `AlphaNum` from a `std&colon;&colon;vector&lt;bool&gt;` element reference&period;

== Synopsis

Declared in `&lt;absl&sol;strings&sol;str&lowbar;cat&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;typename T&gt;
requires std&colon;&colon;is&lowbar;class&lowbar;v&lt;T&gt; &amp;&amp;
          (std&colon;&colon;is&lowbar;same&lowbar;v&lt;T, std&colon;&colon;vector&lt;bool&gt;&colon;&colon;reference&gt; &verbar;&verbar;
           std&colon;&colon;is&lowbar;same&lowbar;v&lt;T, std&colon;&colon;vector&lt;bool&gt;&colon;&colon;const&lowbar;reference&gt;)
AlphaNum(T e);
----

== Description

`vector&lt;bool&gt;&colon;&colon;reference` and `const&lowbar;reference` require special help to convert to `AlphaNum` because it requires two user defined conversions&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *e*
| The bit reference to convert&period;
|===


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