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July 31, 2021 10:56
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Remove certain characters in Swift 5.
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| // | |
| // Remove certain characters | |
| // | |
| let input = "1 234 567".filter {!$0.isWhitespace} | |
| let input2 = "aAbBcCdD".filter {!$0.isLowercase} | |
| let input3 = "!@A#$BC%DE^FG&HI".filter {!$0.isLetter} | |
| let input4 = "1234abcd Abcd!#$%".filter {$0.isLetter} | |
| print(input) // 1234567 | |
| print(input2) // ABCD | |
| print(input3) // !@#$%^& | |
| print(input4) // abcdAbcd |
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