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perlfunc:redo

by gods
on Aug 24, 1999 at 22:42 UTC ( #201=perlfunc: print w/replies, xml ) Need Help??

redo

See the current Perl documentation for redo.

Here is our local, out-dated (pre-5.6) version:


redo - start this loop iteration over again



redo LABEL

redo



The redo command restarts the loop block without evaluating the conditional again. The continue block, if any, is not executed. If the LABEL is omitted, the command refers to the innermost enclosing loop. This command is normally used by programs that want to lie to themselves about what was just input:

    # a simpleminded Pascal comment stripper
    # (warning: assumes no { or } in strings)
    LINE: while (<STDIN>) {
        while (s|({.*}.*){.*}|$1 |) {}
        s|{.*}| |;
        if (s|{.*| |) {
            $front = $_;
            while (<STDIN>) {
                if (/}/) {      # end of comment?
                    s|^|$front\{|;
                    redo LINE;
                }
            }
        }
        print;
    }

See also continue for an illustration of how last, next, and redo work.


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[stevieb]: cheers beech. twas totally my mistake, and I got bit. When things work for so long without issue, one becomes complacent (ie. replace we/one with I ;) I've been copy/pasting that around for a few years without a hiccup, so when...
[stevieb]: choroba pointed that out, I was just, you know, *sigh*. In effect, I was lucky and fortunate
[stevieb]: Kind of like my regex-fu went out the window, but only while looking at that specific file ;)

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