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

Insert at the specified `position` in this string the specified null‐terminated `characterString` (of length `CHAR_TRAITS::length(characterString)`), and return a reference providing modifiable access to this string. Throw `out_of_range` if `position > length()`.

== Synopsis

Declared in `<bslstl_string.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/basic_string-0faf.adoc[basic_string<char16_t>]&
insert(
    xref:bsl/basic_string-0ce/size_type.adoc[size_type] position,
    char16_t const* characterString);
----


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