Web Reference: Nov 2, 2023 · I have a string with various patterns separated by commas. I need to validate two things: (1) that each of patterns matches zero or more of the comma separated strings, and (2) that there are no strings that do not match a pattern. Mar 28, 2020 · Suppose you would want to populate a drop-down from a list containing persons names like "Last Name, First Name". You wouldn't want Excel to see this as two separate options in data validation for each entry in the list, just because there is a comma between the names. Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
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