[#bsl-basic_string-0f3-append-0e64] = xref:bsl.adoc[bsl]::xref:bsl/basic_string-0f3.adoc[basic_string<char32_t>]::append :relfileprefix: ../../ :mrdocs: Append to this string the characters in the range starting at the specified `first` iterator and ending right before the specified `last` iterator of the (template parameter) type `INPUT_ITER`. Return a reference providing modifiable access to this string. The behavior is undefined unless `first` and `last` refer to a sequence of valid values where `first` is at a position at or before `last`. == Synopsis Declared in `<bslstl_string.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- template<class INPUT_ITER> xref:bsl/basic_string-0faf.adoc[basic_string<char32_t>]& append( INPUT_ITER first, INPUT_ITER last); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#