[#BloombergLP-bdlb-TypeTraitHasPrintMethod-NestedTraitDeclaration]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/TypeTraitHasPrintMethod.adoc[TypeTraitHasPrintMethod]::NestedTraitDeclaration
:relfileprefix: ../../../
:mrdocs:

This class template ties the `bdlb::TypeTraitHasPrintMethod` trait tag to the `bdlb::HasPrintMethod` trait metafunction.

== Synopsis

Declared in `<bdlb_printmethods.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
struct NestedTraitDeclaration
    : xref:BloombergLP/bslmf/NestedTraitDeclaration.adoc[bslmf::NestedTraitDeclaration<TYPE, HasPrintMethod>]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/bslmf/NestedTraitDeclaration.adoc[bslmf::NestedTraitDeclaration<TYPE, HasPrintMethod>]`
| Class `t_TYPE` will be convertible to `NestedTraitDeclaration<t_TYPE,t_TRAIT,true>` if `t_TRAIT` is associated with `t_TYPE` using the `BSLMF_NESTED_TRAIT_DECLARATION` macro. Nested trait detection depends on `t_COND` being true. If `t_COND` is false, the nested trait detection will not see the conversion it is looking for and will not associate `t_TRAIT` with `t_TYPE`. This feature is used by `BSLMF_NESTED_TRAIT_DECLARATION_IF` to turn a trait on or off depending on a compile‐time condition (usually another trait).
|===

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslmf/NestedTraitDeclaration/Type.adoc[`Type`] 
| This `typedef` is an alias to `NestedTraitDeclaration`.
|===



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