[#bsl-basic_string-0e-insert-005] = 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 specified `numChars` copies of the specified `character`, and return an iterator providing modifiable access to the first inserted character, or a non‐`const` copy of `position` if `0 == numChars`. The behavior is undefined unless `position` is a valid iterator on this string. == Synopsis Declared in `<bslstl_string.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- xref:bsl/basic_string-0e/iterator.adoc[iterator] insert( xref:bsl/basic_string-0e/const_iterator.adoc[const_iterator] position, xref:bsl/basic_string-0e/size_type.adoc[size_type] numChars, wchar_t character); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#