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is_relative

文件系统：：path：：is[医]绝对的[医]相对

bool is_absolute() const;(1)(since C++17)
bool is_relative() const;(2)(since C++17)

检查路径是绝对的还是相对的。绝对路径是一种路径，它明确地标识文件的位置，而不引用附加的起始位置。第一个版本返回true如果这条路是绝对的，false否则，第二个版本则相反。

参数

%280%29

返回值

1%29true如果这条路是绝对的，false否则。

2%29false如果这条路是绝对的，true否则。

例外

%280%29

注记

小径"/"在POSIX操作系统上是绝对的，但在Windows上是相对的。

另见

absolutesystem_complete (C++17)(C++17)composes an absolute pathconverts a path to an absolute path replicating OS-specific behavior (function)

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