[#bsl-basic_string-0faf-insert-06b]
= xref:bsl.adoc[bsl]::xref:bsl/basic_string-0faf.adoc[basic_string]::insert
:relfileprefix: ../../
:mrdocs:

Insert characters into this string.

== Synopsis

Declared in `<bslstl_string.h>`

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

== Description

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()`.

== Return Value

reference providing modifiable access to this string

== Parameters

[cols="1,4"]
|===
| Name| Description
| *position*
| starting index
| *other*
| string or character sequence to compare or use
| *sourcePosition*
| starting index in the source string
| *numChars*
| number of characters
|===


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