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Bookmark or Share- Regular expression "^ [a-zA-Z]" or " [^a-zA-Z]" - Stack OverflowYes, the first means "match all strings that start with a letter", the second means "match all strings that contain a non-letter".
- How to get the same utf-8 encoding as Google for Arabic URLs?Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand
- How does the regular expression " (aa)+\1" match "aaaaaa"?Here's the break up of the regex (aa)+\1: (aa)+ matches the first two aa in the string. Remaining string - aaaa. There is more to be matched by (aa)+, so it goes on to match next aa. Remaining string - aa. Again (aa)+ can match the remaining string. So it matches the next aa. Remaining string - "". Remember, the quantifiers by default act ...
- How to match 'aA1' or 'Aa1' or '1aA' with regex? - Stack OverflowRegular Expressions javascript how to check aa_bb. 1. Matching one of two regular expression in ...
- What does this regular expression mean /^[a-z]{1}[a-z0-9_]{3,13}$/Assert position at the beginning of the string «^» Match a single character in the range between “a” and “z” «[a-z]{1}» Exactly 1 times «{1}» Match a single character present in the list below «[a-z0-9_]{3,13}» Between 3 and 13 times, as many times as possible, giving back as needed (greedy) «{3,13}» A character in the range between “a” and “z” «a-z» A character in ...
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