# std::filesystem::path::assign

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< cpp‎ | filesystem‎ | path

path& assign( string_type&& source ); | (1) | (since C++17)
template< class Source > path& assign( const Source& source ); | (2) | (since C++17)
template< class InputIt > path& assign( InputIt first, InputIt last ); | (3) | (since C++17)

Replaces the contents to the `path` object by a new pathname constructed from the given character sequence.

1) Assigns the pathname identified by the detected-format string `source`, which is left in valid, but unspecified state.
2) Assigns the pathname identified by the detected-format character range `source`.
3) Assigns the pathname identified by detected-format character range `[first, last)`.

(2) participates in overload resolution only if `Source` and `path` are not the same type, and either:

- `Source` is a specialization of std::basic_string or std::basic_string_view, or
- std::iterator_traits<std::decay_t<Source>>::value_type is valid and denotes a possibly const-qualified encoding character type (char, char8_t, (since C++20)char16_t, char32_t, or wchar_t).

### Parameters

source | - | a character range to use, represented as std::string, std::string_view, pointer to a null-terminated multibyte string, or as an input iterator with char value type that points to a null-terminated multibyte string
first, last | - | a character range to use
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

### Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR | Applied to | Behavior as published | Correct behavior
--- | --- | --- | ---
LWG 3244 | C++17 | constraint that `Source` cannot be `path` was missing | added

### See also

operator= | assigns another path (public member function)

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