This struct template implements the is_void meta‐function defined in the C++11 standard [meta.unary.cat]to determine if the (template parameter) t_TYPE is the (possibly cv‐qualified) void type. This struct derives from bsl::true_type if t_TYPE is the void type, and bsl::false_type otherwise.

Synopsis

Declared in <bslmf_isvoid.h>

template<class t_TYPE>
struct is_void
    : false_type

Base Classes

Name

Description

false_type

Metafunction representing the boolean constant false.

Specializations

Name

Description

is_void<void>

This partial specialization of is_void derives from bsl::true_type for when the (template parameter) t_TYPE is void.

is_void<void volatile>

This partial specialization of is_void derives from bsl::true_type for when the (template parameter) t_TYPE is volatile void.

is_void<void const>

This partial specialization of is_void derives from bsl::true_type for when the (template parameter) t_TYPE is const void.

is_void<void const volatile>

This partial specialization of is_void derives from bsl::true_type for when the (template parameter) t_TYPE is const volatile void.

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