narrow.h File Reference

#include <type_traits>
#include "invariant.h"

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Functions
template<typename output_type , typename input_type >
output_type	narrow_cast (input_type value)
	Alias for static_cast intended to be used for numeric casting Rationale: Easier to grep than static_cast. More...
template<typename output_type , typename input_type >
output_type	narrow (input_type input)
	Run-time checked narrowing cast. More...
template<typename output_type , typename input_type >
output_type	narrow_or_throw_out_of_range (input_type input)
	Run-time checked narrow cast. More...

Function Documentation

narrow()

template<typename output_type , typename input_type >

output_type narrow

(

input_type

input

)

Run-time checked narrowing cast.

Raises an invariant if the input value cannot be converted to the output value without data loss

Template accepts a single argument - the return type. Input type is deduced from the function argument and shouldn't be specified

Definition at line 34 of file narrow.h.

narrow_cast()

template<typename output_type , typename input_type >

output_type narrow_cast

(

input_type

value

)

Alias for static_cast intended to be used for numeric casting Rationale: Easier to grep than static_cast.

Definition at line 19 of file narrow.h.

narrow_or_throw_out_of_range()

template<typename output_type , typename input_type >

output_type narrow_or_throw_out_of_range

(

input_type

input

)

Run-time checked narrow cast.

Throws a std::out_of_range error if the input cannot be converted to the output_type without data lass

Definition at line 44 of file narrow.h.