[#bsl-basic_string-0e-insert-0a1]
= xref:bsl.adoc[bsl]::xref:bsl/basic_string-0e.adoc[basic_string<wchar_t>]::insert
:relfileprefix: ../../
:mrdocs:

Insert at the specified `position` in this string the optionally specified `numChars` characters starting at the specified `sourcePosition` in the specified `other` string, or the suffix of `other` starting at `sourcePosition` if `sourcePosition + numChars > other.length()`. If `numChars` is not specified, `npos` is used. Return a reference providing modifiable access to this string. Throw `out_of_range` if `position > length()` or `sourcePosition > other.length()`.

== Synopsis

Declared in `<bslstl_string.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:bsl/basic_string-0faf.adoc[basic_string<wchar_t>]&
insert(
    xref:bsl/basic_string-0e/size_type.adoc[size_type] position,
    xref:bsl/basic_string-0faf.adoc[basic_string<wchar_t>] const& other,
    xref:bsl/basic_string-0e/size_type.adoc[size_type] sourcePosition,
    xref:bsl/basic_string-0e/size_type.adoc[size_type] numChars = npos);
----


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