boostregexsearch

boostregexsearch is a function within the Boost.Regex library that allows for searching within a string for occurrences of a regular expression. It is designed to find matches without consuming the input string, meaning the original string remains unchanged after the search. This is in contrast to some other regex functions that might advance through the string.

The primary purpose of boostregexsearch is to locate the starting position and extent of all non-overlapping matches of a given regular expression within a target sequence. It can be used with various character types, including `char` and `wchar_t`, and supports different regex syntaxes, such as POSIX, ECMAScript, and Perl.

When boostregexsearch is called, it typically returns an iterator or a similar construct that points to the beginning of the sequence of matches. Each match can then be accessed to retrieve its matched substring, its starting position, and its length. This makes it useful for tasks like pattern extraction, data validation, and text manipulation where identifying all matches is crucial. The function is part of the broader Boost.Regex library, which provides a comprehensive set of tools for regular expression processing in C++.