I don't generally like statement modifiers.
You don't have to follow me on that, but statement modifiers can help making your code clearer and more concise.
Consider for instance this (somewhat meaningless) example:
while (<$IN>) {
next if /^\s*$/; # remove empty lines
next if /^\s*#/; # remove comments
next if /ORA/i; # remove lines with Oracle warnings and errors
next unless some_condition($_);
last if /File processed/;
# ... now do the actual processing of useful lines
}
If you wanted to do the same with regular conditionals, you would need about three times as many code lines, and it would probably end up being less clear.
Update: added a missing closing parenthesis to the while condition.<\small>
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