Enumeration Case

NSRegularExpressionSearch

The search string is treated as an ICU-compatible regular expression. If set, no other options can apply except NSCaseInsensitiveSearch and NSAnchoredSearch. You can use this option only with the rangeOfString:... methods and stringByReplacingOccurrencesOfString:withString:options:range:.

Declaration

NSRegularExpressionSearch = 1024