[#bsl-swap-0b1]
= xref:bsl.adoc[bsl]::swap
:relfileprefix: ../
:mrdocs:

Efficiently exchange the values of the specified `a` and `b` objects. This method provides the no‐throw exception‐safety guarantee if `a` and `b` allocators compare equal. Note that this function is only available for C++11 (and later) language standards.

== Synopsis

Declared in `<bslstl_stringstream.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class CHAR_TYPE,
    class CHAR_TRAITS,
    class ALLOCATOR>
void
swap(
    xref:bsl/basic_stringstream.adoc[basic_stringstream<CHAR_TYPE, CHAR_TRAITS, ALLOCATOR>]& a,
    xref:bsl/basic_stringstream.adoc[basic_stringstream<CHAR_TYPE, CHAR_TRAITS, ALLOCATOR>]& b);
----


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