Is there a difference in the开发者_如何学Go way SQL interprets the logical operators AND and &&?AND is Standard SQL
I know the rules for && and || but what are &a开发者_StackOverflowmp; and |? Please explain these to me with an example.Those are the bitwise AND and bitwise OR operators.
What does -a mean in the below line. if [ \"${FILE_SYSTE开发者_JAVA技巧M}\" != \"xyz\" -a \"${FILE_SYSTEM}\" != \"abc\" ]
I often do this when necessary to prevent a null pointer exception: // Example #1 if (cats != null && cats.Count > 0)
I know the AND word defines binary and... but what defines logical and?开发者_如何学编程The same word, AND, is also used for logical and. But the two input values to AND are recommended to be well-for
This question already has answers here: 开发者_C百科Closed 12 years ago. Possible Duplicate: Is there any wisdom behind “and”, “or” operators in Ruby ?
Is there a better way to write the following conditional in javascript? if ( value == 1 || value == 16 || value == -500 || value == 开发者_JAVA技巧42.42 || value == \'something\' ) {
This question already has answers here: Closed 12 years ago. Possible Duplicate: Javascript === vs == : Does it matter which “equal” operator I use?
How does this ex开发者_StackOverflowecute? def f(x): return x>0 and (x%2)+f(x/2) or 0 x is an array, for instance: [1, 1, 1, 3]This code is broken. For starters, x>0 is always true. But x%2 a
I was just wondering if there is an XOR logical operator in C (something like && for AND but for XOR). I know I can split an XOR into ANDs, NOTs and ORs but a simple XOR would be much better.
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