- filesystem[meta header]
- std::filesystem[meta namespace]
- function[meta id-type]
- cpp17[meta cpp]
namespace std::filesystem {
bool operator<=(const path& lhs, const path& rhs) noexcept;
}pathクラスにおいて、左辺が右辺以下かの判定を行う。
return !(rhs < lhs);#include <cassert>
#include <filesystem>
namespace fs = std::filesystem;
int main()
{
fs::path a = "a/b/c";
fs::path b = "a/b/d";
assert(a <= b);
assert(a <= a);
}- a <= b[color ff0000]
- a <= a[color ff0000]
- C++17
- Clang:
- GCC, C++17 mode: 8.1
- Visual C++: