[#BloombergLP-bslstl-operator_plus-02]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::operator+
:relfileprefix: ../../
:mrdocs:

Return a `bsl::string` having the value of the concatenation of the strings referred to by the specified `lhs` and `rhs` values.

== Synopsis

Declared in `<bslstl_stringref.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class CHAR_TYPE>
xref:bsl/basic_string-0faf.adoc[bsl::basic_string<CHAR_TYPE>]
operator+(
    xref:BloombergLP/bslstl/StringRefImp-0c.adoc[StringRefImp<CHAR_TYPE>] const& lhs,
    xref:BloombergLP/bslstl/StringRefImp-0c.adoc[StringRefImp<CHAR_TYPE>] const& rhs);
----


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