Perl qx execution order in array initialization
题
Assuming I have the following:
my @net = (`echo "HELLO" > file`,
`less file`);
is it guaranteed that the order of execution is from 0..N (the first element in the array is executed first, then the second,etc..)?
I've tested this, and this is what really happens, but can I count on that?
thanks,
解决方案
Yes. Each of the comma-separated items in your brackets ()
on the right-hand side are terms. These have the highest precedence in Perl, and evaluate left-to-right. Backticks are quote-like operators.
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