std::experimental::filesystem::remove, std::experimental::filesystem::remove_all
From cppreference.com
| Defined in header <experimental/filesystem>
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bool remove( const path& p ); bool remove( const path& p, error_code& ec ); |
(1) | (filesystem TS) |
std::uintmax_t remove_all( const path& p ); std::uintmax_t remove_all( const path& p, error_code& ec ); |
(2) | (filesystem TS) |
1) The file or empty directory identified by the path
p is deleted as if by the POSIX remove. Symlinks are not followed (symlink is removed, not its target).2) Deletes the contents of
p (if it is a directory) and the contents of all its subdirectories, recursively, then deletes p itself as if by repeatedly applying the POSIX remove. Symlinks are not followed (symlink is removed, not its target).Parameters
| p | - | path to delete |
| ec | - | out-parameter for error reporting in the non-throwing overload |
Return value
1)
true if the file was deleted, false if it did not exist. The overload that takes error_code& argument returns false on errors.2) Returns the number of files and directories that were deleted (which may be zero if
p did not exist to begin with). The overload that takes error_code& argument returns static_cast<std::uintmax_t>(-1) on error.Exceptions
The overload that does not take an error_code& parameter throws filesystem_error on underlying OS API errors, constructed with p as the first argument and the OS error code as the error code argument. std::bad_alloc may be thrown if memory allocation fails. The overload taking an error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. This overload has
noexcept specification:
noexceptNotes
On POSIX systems, this function typically calls unlink and rmdir as needed, on Windows RemoveDirectoryW and DeleteFileW.
Example
Run this code
#include <cstdint>
#include <experimental/filesystem>
#include <iostream>
namespace fs = std::experimental::filesystem;
int main()
{
fs::path dir = fs::temp_directory_path();
fs::create_directories(dir / "abcdef/example");
std::uintmax_t n = fs::remove_all(dir / "abcdef");
std::cout << "Deleted " << n << " files or directories\n";
}
Possible output:
Deleted 2 files or directories
See also
| erases a file (function) |