std::source_location::column
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source_location::column
constexpr std::uint_least32_t column() const noexcept;
(since C++20)
Returns an implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number). Column numbers are presumed to be 1-indexed.
Contents
[edit] Parameters
(none)
[edit] Return value
An implementation-defined value representing some offset from the start of the line represented by this object (i.e., the column number).
An implementation is encouraged to use 0 when the column number is unknown.
[edit] Example
Run this code
#include <iostream> #include <source_location> template<typename T = std::source_location > inline void pos(const T& location = T::current()) { std::cout << "(" << location.line() << ':' << location.column() << ") "; } int main() { // ↓: column #9 pos(); std::cout << "Proxima\n"; // row #18 pos(); std::cout << "Centauri\n"; // row #19 // ↑: column #11 }
Possible output:
(18:9) Proxima (19:11) Centauri