How do you check if a string contains only digits in Go
Go
đź¤– Code Explanation
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The code imports the fmt and regexp packages, then defines two input strings and two regular expressions. The first regular expression matches strings that contain only digits, while the second matches strings that contain only letters and numbers. If a string matches the regular expression, the code prints a message indicating that the string is valid. Otherwise, it prints a message indicating that the string is not valid.
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