[#bsl-basic_string-0ce-operator_plus_eq-04]
= xref:bsl.adoc[bsl]::xref:bsl/basic_string-0ce.adoc[basic_string<char16_t>]::operator+=
:relfileprefix: ../../
:mrdocs:

Addition assignment operators

== Synopses

Declared in `<bslstl_string.h>`

Append the specified `character` to this string, and return a reference providing modifiable access to this string.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
xref:bsl/basic_string-0ce/operator_plus_eq-09.adoc[operator+=](char16_t character);
----

[.small]#xref:bsl/basic_string-0ce/operator_plus_eq-09.adoc[_» more..._]#

Append the specified `rhs` string to this string, and return a reference providing modifiable access to this string.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
xref:bsl/basic_string-0ce/operator_plus_eq-0d3.adoc[operator+=](xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>] const& rhs);
----

[.small]#xref:bsl/basic_string-0ce/operator_plus_eq-0d3.adoc[_» more..._]#

Append the specified null‐terminated `rhs` string (of length `CHAR_TRAITS::length(rhs)`) to this string, and return a reference providing modifiable access to this string.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
xref:bsl/basic_string-0ce/operator_plus_eq-01.adoc[operator+=](char16_t const* rhs);
----

[.small]#xref:bsl/basic_string-0ce/operator_plus_eq-01.adoc[_» more..._]#

Append the specified `rhs` to this string, and return a reference providing modifiable access to this string.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class STRING_VIEW_LIKE_TYPE>
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
xref:bsl/basic_string-0ce/operator_plus_eq-0a.adoc[operator+=](STRING_VIEW_LIKE_TYPE const& rhs);
----

[.small]#xref:bsl/basic_string-0ce/operator_plus_eq-0a.adoc[_» more..._]#

Append the specified `rhs` string to this string, and return a reference providing modifiable access to this string.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ALLOC2>
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
xref:bsl/basic_string-0ce/operator_plus_eq-0d7.adoc[operator+=](std::basic_string<char16_t, char_traits<char16_t>, ALLOC2> const& rhs);
----

[.small]#xref:bsl/basic_string-0ce/operator_plus_eq-0d7.adoc[_» more..._]#


[.small]#Created with https://www.mrdocs.com[MrDocs]#