BloombergLP::bslstl::Function_ArgTypes

Component-private metafunction providing nested argument typedefs for bsl::function.

Synopsis

Declared in <bslstl_function.h>

template<class PROTOTYPE>
struct Function_ArgTypes;

Description

This component-private struct template provides the following nested typedefs for bsl::function for a specified PROTOTYPE which must be a function type: ` argument_type -- Only if PROTOTYPE takes exactly one argument first_argument_type -- Only if PROTOTYPE takes exactly two arguments second_argument_type -- Only if PROTOTYPE takes exactly two arguments ` The C++ Standard requires that function define these typedefs for compatibility with one- and two-argument legacy (now deprecated) functor adaptors. bsl::function publicly inherits from an instantiation of this template in order to conditionally declare the above nested types. This primary (unspecialized) template provides no typedefs.

Specializations

NameDescription
Function_ArgTypes<RET(ARG)> Function_ArgTypes specialization for single-argument function prototypes.
Function_ArgTypes<RET(ARG1, ARG2)> Function_ArgTypes specialization for two-argument function prototypes.

Derived Classes

NameDescription
Function_Variadic<RET(ARGS...)> Component-private base providing representation and call operator for bsl::function.