std::experimental::source_location::column

 

C++

Compiler support

Freestanding and hosted

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Standard library

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Feature test macros (C++20)

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Technical specifications

Symbols index

External libraries

 

Experimental

Technical Specification

Filesystem library (filesystem TS)

Library fundamentals (library fundamentals TS)

Library fundamentals 2 (library fundamentals TS v2)

Library fundamentals 3 (library fundamentals TS v3)

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Extensions for parallelism 2 (parallelism TS v2)

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Extensions for concurrency 2 (concurrency TS v2)

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Library fundamentals v2

experimental::propagate_const

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experimental::lcm

experimental::source_location

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detection idiom

uniform container erasure

logical operator type traits

 

std::experimental::source_location

Creation

source_location::source_location

source_location::current

Field Access

source_location::line

source_location::column

source_location::file_name

source_location::function_name

 

constexpr std::uint_least32_t column() const noexcept;		(library fundamentals TS v2)

Returns an implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number).

Parameters

(none)

Return value

An implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number).

Example

Run this code

#include <experimental/source_location>
#include <iostream>
 
template<typename T = std::experimental::source_location>
inline void pos(const T& location = T::current()
{
    std::cout
        << "("
        << location.line()
        << ':' 
        << location.column()
        << ") ";
}
 
int main()
{
    pos(); std::cout << "Proxima\n";
    pos(); std::cout << "Centauri\n";
}

Possible output:

(17:5) Proxima
(18:5) Centauri

See also

line	return the line number represented by this object (public member function)
file_name	return the file name represented by this object (public member function)
function_name	return the name of the function represented by this object, if any (public member function)
C++ documentation for Filename and line information

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