29 Input/output library [input.output]

29.11 File systems [filesystems]

29.11.7 Class path [fs.class.path]

29.11.7.4 Members [fs.path.member]

29.11.7.4.10 Query [fs.path.query]

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[[nodiscard]] bool empty() const noexcept;
1
#
Returns: true if the pathname in the generic format is empty, otherwise false.
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bool has_root_path() const;
2
#
Returns: !root_­path().empty().
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bool has_root_name() const;
3
#
Returns: !root_­name().empty().
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bool has_root_directory() const;
4
#
Returns: !root_­directory().empty().
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bool has_relative_path() const;
5
#
Returns: !relative_­path().empty().
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bool has_parent_path() const;
6
#
Returns: !parent_­path().empty().
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bool has_filename() const;
7
#
Returns: !filename().empty().
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bool has_stem() const;
8
#
Returns: !stem().empty().
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bool has_extension() const;
9
#
Returns: !extension().empty().
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bool is_absolute() const;
10
#
Returns: true if the pathname in the native format contains an absolute path ([fs.class.path]), otherwise false.
11
#
[Example
:
path("/").is_­absolute() is true for POSIX-based operating systems, and false for Windows-based operating systems.
— end example
]
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bool is_relative() const;
12
#
Returns: !is_­absolute().