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How to determine if string contains specific substring within the first X characters
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How can I find and replace only if a match forms a whole word?
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How do I check if a string contains another string in Objective-C?
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How to determine if a string is a valid variable name?
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Simple way to count character occurrences in a string
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How can I search for a string containing a colon?
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How to check if a string starts with another string in C?
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How to use regex in string in java?
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Check for whitespace at beginning of string
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Java String - See if a string contains only numbers and not letters
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Verifying that a string contains only letters in C#
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How to filter string for unwanted characters using regex?
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Check if string is a punctuation character
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Test if string ONLY contains given characters
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How to trim a particular word from a string and store it?