![]() ![]() If you get stuck trying to create a single regexp that solves your problem, take a step back and think if you could break the problem down into smaller pieces, solving each challenge before moving onto the next one. Instead of creating one complex regular expression, it’s often easier to write a series of simpler regexps. match, : regexp.MatchString(p(a-z )ch, peach) fmt.Println(match). ![]() See the stackoverflow discussion at for more details.ĭon’t forget that you’re in a programming language and you have other tools at your disposal. Go by Example: Regular Expressions This tests whether a pattern matches a string. This is a somewhat pathological example (because email addresses are actually surprisingly complex), but is used in real code. Newer regular expression facilities (notably Perl and those languages that have copied it) have added many new operators and escape sequences. Some people, when confronted with a problem, think “I know, I’ll use regularĮxpressions.” Now they have two problems.Īs a cautionary tale, check out this regular expression that checks if a email address is valid: (?:(?:\r\n)? (?:(?:(?:\r\n)?))*"(?:(?: ![]()
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