I am wondering what the exclamation mark in if(!anObject) mean开发者_开发百科s.It is the boolean NOT operator also called negation.
I just learned this great pattern (from javascript actually) and I would like to apply it to my c++ code.
I have a doubt in the program below. int main() { int i = -3,j = 2, k = 0,m; m = ++i || ++j && ++k;
The following code: $result = (false or true); echo(\"With extra parentheses: \".($result?\"true\":\"false\"));
I am trying to get th开发者_运维问答is: if($a[2] > $b[2] && $c[2] < 3) echo \"bingo\";
The code is as follows but the if && statement doesn\'t work. I am testing for both the drop-down and search box to be empty at the same-time yet when I select something from the drop down it
I remember reading a while back in regards to logical operators that开发者_运维技巧 in the case of OR, using || was better than or (or vice versa).
How can I implement bitwise operators in Lua lang开发者_如何学Pythonuage? Specifically, I need a XOR operator/method.In Lua 5.2, you can use functions in bit32 library.
Is there an equivalent Bash operator to Perl\'s logical defined-or?Some开发者_运维百科thing akin to:
If I want to select a subset of data in R, I can use the subset f开发者_如何学JAVAunction. I wanted to base an analysis on data that that was matching one of a few criteria, e.g. that a certain variab
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