std::filesystem::path::empty

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Feature test macros(C++20)
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Concepts library(C++20)
Diagnostics library
Memory management library
Metaprogramming library(C++11)
General utilities library
Containers library
Iterators library
Ranges library(C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library(C++17)
Concurrency support library(C++11)
Execution control library(C++26)
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External libraries

[edit]

Filesystem library

Classes

filesystem::path
filesystem::filesystem_error
filesystem::directory_entry
filesystem::directory_iterator
filesystem::recursive_directory_iterator
filesystem::file_status
filesystem::space_info

filesystem::file_type
filesystem::file_time_type
filesystem::perms
filesystem::perm_options
filesystem::copy_options
filesystem::directory_options

Functions

filesystem::absolute
filesystem::canonicalfilesystem::weakly_canonical
filesystem::relativefilesystem::proximate
filesystem::copy
filesystem::copy_file
filesystem::copy_symlink
filesystem::create_directory filesystem::create_directories
filesystem::create_hard_link
filesystem::create_symlink filesystem::create_directory_symlink
filesystem::current_path
filesystem::temp_directory_path

filesystem::exists
filesystem::equivalent
filesystem::file_size
filesystem::hard_link_count
filesystem::last_write_time
filesystem::permissions
filesystem::read_symlink
filesystem::remove filesystem::remove_all
filesystem::rename
filesystem::resize_file
filesystem::space
filesystem::status filesystem::symlink_status

File types

filesystem::is_block_file
filesystem::is_character_file
filesystem::is_directory
filesystem::is_empty
filesystem::status_known

filesystem::is_fifo
filesystem::is_other
filesystem::is_regular_file
filesystem::is_socket
filesystem::is_symlink

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std::filesystem::path

Member types

Member constants

path::native_formatpath::generic_formatpath::auto_format

Member functions

path::path
path::~path
path::operator=
path::assign
path::appendpath::operator/=
path::concatpath::operator+=
path::clear
path::make_preferred
path::remove_filename
path::replace_filename
path::replace_extension
path::swap
path::compare
path::beginpath::end

path::c_strpath::nativepath::operator string_type
path::stringpath::u8stringpath::u16stringpath::u32stringpath::wstring
path::generic_stringpath::generic_u8stringpath::generic_u16stringpath::generic_u32stringpath::generic_wstring
path::lexically_normalpath::lexically_relativepath::lexically_proximate

Path decomposition

path::root_name
path::root_directory
path::root_path
path::relative_path
path::parent_path
path::filename
path::stem
path::extension
path::empty

path::has_root_pathpath::has_root_namepath::has_root_directorypath::has_relative_pathpath::has_parent_pathpath::has_filenamepath::has_stempath::has_extension
path::is_absolutepath::is_relative

Non-member functions

operator==operator!=operator<operator<=operator>operator>=operator<=>

(until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

operator/
operator<<operator>>
swap(std::filesystem::path)
hash_value
u8path

Helper classes

hash<std::filesystem::path>

formatter<std::filesystem::path>

(C++26)

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bool empty()constnoexcept;		(since C++17)

Checks if the path in generic format is empty.

[edit]Parameters

(none)

[edit]Return value

true if the path is empty,false otherwise.

[edit]Notes

An empty path can be obtained by callingclear and by default-constructing apath. It can also be returned by a path decomposition function (such asextension) if the corresponding component is not present in the path.

An empty path is classified as a relative path.