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Check if string contains only digits
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How do I compare strings in Java?
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How to parse a month name (string) to an integer for comparison in C#?
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What is the best way to iterate over a dictionary?
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Can I determine if an argument is string literal?
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Is There a Better Way of Checking Nil or Length == 0 of a String in Ruby?
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How do I parse a string to a float or int?
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How to implement searching of a string in an array of dictionaries?
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Error checking an inputed value
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How to get a random value from dictionary?
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What is the best (idiomatic) way to check the type of a Python variable?
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Javascript string/integer comparisons
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How to test if a string is JSON or not?
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How can I type-check variables in Python?
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Check a string to see if all characters are hexadecimal values
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How to test if a string is basically an integer in quotes using Ruby