[#BloombergLP-bslmf-SelectTraitCase-Eval]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::xref:BloombergLP/bslmf/SelectTraitCase.adoc[SelectTraitCase]::Eval
:relfileprefix: ../../../
:mrdocs:

Evaluates `t_TRAIT` for the specified (template parameter) `T` type. The resulting `Eval<T>` instantiation is derived from `true_type` if `t_TRAIT<T>` is derived from `true_type` and `false_type` if `t_TRAIT<T>` is derived from `false_type`. (More generally, `Eval<T>` is derived from `t_TRAIT<T>::type`.)

== Synopsis

Declared in `<bslmf_selecttrait.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
struct Eval
    : t_TRAIT<t_TYPE>::type
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `t_TRAIT<t_TYPE>::type`
| 
|===


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