Lately, I’ve been working on a project that requires some basic MLP text processing to be performed on device. A component of our text processing involved removing any trailing punctuation, no matter the language.
I’ve found the below String Extension is a good balance between effectiveness, performance, and readability. Especially if you are collecting input from users prone to excessive punctuation.
| extension String { | |
| func trimTrailingPunctuation() -> String { | |
| return self.trimmingCharacters(in: .whitespacesAndNewlines) | |
| .trimmingCharacters(in: .punctuationCharacters) | |
| .trimmingCharacters(in: .whitespacesAndNewlines) | |
| } | |
| } |
| let example1 = "How are you???".trimTrailingPunctuation() | |
| >>> How are you | |
| let example2 = "Hi!!!!".trimTrailingPunctuation() | |
| >>> Hi | |
| let example3 = "Act limited time offer now!".trimTrailingPunctuation() | |
| >>> Act limited time offer now |
