BloombergLP::bdlb::StringRefUtil::strstrCaseless

Return a bslstl::StringRef object referring to the first occurrence in (the referent data of) the specified string at which (the referent data of) the specified subString is found using case‐insensitive comparisons, or bslstl::StringRef() if there is no such occurrence. See {Caseless Comparisons}. If subString has zero length then a zero‐length reference to the beginning of string is returned (i.e., bslstl::StringRef(string.data(), 0));