I'm not sure what the "^" mean here: if ^ a then do...
does it mean "if ^= a then do"?
thanks
In this context, ^ means "not". The evaluation of "a" is considered to be false when a is either missing or zero. Any other value gets evaluated as true. So "^ a" gets evaluated as true whenever a is missing or zero. Any other value gets evaluated as false. Putting it all together:
if ^ a then do;
The statements that follow get performed whenever the variable A is either missing or zero.
In this context, ^ means "not". The evaluation of "a" is considered to be false when a is either missing or zero. Any other value gets evaluated as true. So "^ a" gets evaluated as true whenever a is missing or zero. Any other value gets evaluated as false. Putting it all together:
if ^ a then do;
The statements that follow get performed whenever the variable A is either missing or zero.
^ is not
so ^= not equal to
For future reference the list of operators is here:
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