in reply to My habitual errors
Even after all this time, I still sometimes inadvertently use assignment instead of testing for numeric equality:
if ($first = $second) { # do something } else { # this code is never executed since assignment to $first always retu +rns true }
Sigh. It is dumb, but I did it just last week.
Update: as pointed out by jdporter, in cases where $second evaluates as false, the resulting assignment to $first will also return false. While this rarely happens to me (since I'm usually trying to evaluate numerical equality between non-zero variables), it is an important distinction.
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