Java == != && || operator?
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How do I compare strings in Java?
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Why does comparing strings using either '==' or 'is' sometimes produce a different result?
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What's the difference between "==" and "=~"?
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What does the ??!??! operator do in C?
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How does operator  work when comparing two strings?
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Not equal  != operator on NULL
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?: Operator Vs. If Statement Performance
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Difference between  and  in Java
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What is the "=~" operator in Ruby?
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'AND' vs '&&' as operator
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What is a reason of placing boolean or null before comparison operator?
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Is `if (condition = value)` the correct syntax for comparison?
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What does the '!!!' syntax mean in javascript?
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What is this operator: &=
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How do you use the ? : (conditional) operator in JavaScript?
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if(!x) vs if(x==false) in ruby
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Javascript || operator