I'm trying to match a string of the form DDhDDmDDs (i.e. some sort of a time string using hms as delimiters). Very basically I'm using '(\d+h)?(\d+m)?(\d+s)?', but that doesn't really do it, as it'll ...

Regex is a powerful – yet overlooked – tool in search and data analysis. With just a single line, you can automate what would otherwise take dozens of lines of code. Short for “regular expression,” ...