std::experimental::filesystem::path::append, std::experimental::filesystem::path::operator/=
From cppreference.com
path& operator/=( const path& p );
|
(1) | (filesystem TS) |
template< class Source >
path& operator/=( const Source& source );
|
(2) | (filesystem TS) |
template< class Source >
path& append( const Source& source );
|
(3) | (filesystem TS) |
template< class InputIt >
path& append( InputIt first, InputIt last );
|
(4) | (filesystem TS) |
1) First, appends the preferred directory separator to
this, except if any of the following conditions is true: * the separator would be redundant (
*this already ends with a separator). *
*this is empty, or adding it would turn a relative path to an absolute path in some other way. *
p is an empty path. *
p.native() begins with a directory separator. Then, appends
p.native() to the pathname maintained by *this.2,3) Same as (1), but accepts any
std::basic_string, null-terminated multicharacter string, or an input iterator pointing to a null-terminated multicharacter sequence.4) Same as (1), but accepts any iterator pair that designates a multicharacter string.
Parameters
| p | - | pathname to append |
| source | - | std::basic_string, null-terminated multicharacter string, or an input iterator pointing to a null-terminated multicharacter sequence, which represents a path name (either in portable or in native format)
|
| first, last | - | pair of LegacyInputIterators that specify a multicharacter sequence that represents a path name |
| Type requirements | ||
-InputIt must meet the requirements of LegacyInputIterator.
| ||
-The value type of InputIt must be one of the encoded character types (char, wchar_t, char16_t and char32_t).
| ||
Return value
*this
Exceptions
May throw filesystem_error on underlying OS API errors or std::bad_alloc if memory allocation fails.
Example
Run this code
#include <experimental/filesystem>
#include <iostream>
namespace fs = std::experimental::filesystem;
int main()
{
fs::path p1 = "C:";
p1 /= "Users"; // does not insert a separator
// "C:Users" is a relative path in Windows
// adding directory separator would turn it to an absolute path
std::cout << "\"C:\" / \"Users\" == " << p1 << '\n';
p1 /= "batman"; // inserts fs::path::preferred_separator, '\' on Windows
std::cout << "\"C:\" / \"Users\" / \"batman\" == " << p1 << '\n';
}
Possible output:
"C:" / "Users" == "C:Users"
"C:" / "Users" / "batman" == "C:Users\batman"
See also
| concatenates two paths without introducing a directory separator (public member function) | |
| concatenates two paths with a directory separator (function) |