[#BloombergLP-bslstl-Pair_IndexOfType-006]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Pair_IndexOfType-02.adoc[Pair_IndexOfType]<T2, T1, T2>
:relfileprefix: ../../
:mrdocs:

This partial specialization of `Pair_IndexOfType` returns the index of second element of pair.

== Synopsis

Declared in `<bslstl_pair.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class T1,
    class T2>
struct xref:BloombergLP/bslstl/Pair_IndexOfType-02.adoc[Pair_IndexOfType]<T2, T1, T2>
    : xref:bsl/integral_constant-02.adoc[bsl::integral_constant<size_t, 1U>]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/integral_constant-02.adoc[bsl::integral_constant<size_t, 1U>]`
| Metafunction representing a compile‐time constant of the specified (template parameter) `t_TYPE` with the specified (template parameter) `t_VALUE`.
|===

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/Pair_IndexOfType-006/type.adoc[`type`] 
| Alias for this `integral_constant` specialization.
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/Pair_IndexOfType-006/operator_call.adoc[`operator()`] 
| Return a copy of the template argument `t_VALUE`.
|===



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