[ostream.assign] # 31 Input/output library [[input.output]](./#input.output) ## 31.7 Formatting and manipulators [[iostream.format]](iostream.format#ostream.assign) ### 31.7.6 Output streams [[output.streams]](output.streams#ostream.assign) #### 31.7.6.2 Class template basic_ostream [[ostream]](ostream#assign) #### 31.7.6.2.3 Assignment and swap [ostream.assign] [🔗](#lib:operator=,basic_ostream) `basic_ostream& operator=(basic_ostream&& rhs); ` [1](#1) [#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L6164) *Effects*: Equivalent to swap(rhs)[.](#1.sentence-1) [2](#2) [#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L6168) *Returns*: *this[.](#2.sentence-1) [🔗](#lib:swap,basic_ostream) `void swap(basic_ostream& rhs); ` [3](#3) [#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/iostreams.tex#L6179) *Effects*: Calls basic_ios​::​swap(rhs)[.](#3.sentence-1)