ruby operator "=~"
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What is the "=~" operator in Ruby?
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Ruby: String Comparison Issues
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What does ~$ stand for?
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Why does Ruby's String#to_i sometimes return 0 when the string contains a number?
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What does the operator "<<" mean in C#?
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Why doesn't Ruby support i++ or i--​ (increment/decrement operators)?
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What is the difference between != and  operators?
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How to: The ~ operator?
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`if __name__ == '__main__'` equivalent in Ruby
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Trying to use "\~" to generate tilde symbol in math mode
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Difference between "and" and && in Ruby?
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Difference between -%> and %> in rails
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What does "<<-" mean in Ruby?
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operators as strings
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What does =~ do in Perl?
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The R %*% operator
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What does the Bash operator <<< (i.e. triple less than sign) mean?