Re^2: Can't coerce UNKNOWN to string in substitution iterator (splain, (??{}))

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Re^3: Can't coerce UNKNOWN to string in substitution iterator (splain, (??{})) by beech (Parson) on Oct 11, 2016 at 00:19 UTC
Hi I think the X is to prevent the regex from matching. Isn't there a better way to do that? That is a good observation Maybe, there are http://perldoc.perl.org/perlre.html#Verbs for that, more on this at the end of this post Taking a second look at output of (??{ versus (?{ Read more... (2 kB) As you can see all three versions end the final result of `NUMBERS:[1:33 ]` [download] they just get there by different order of add/delete, not sure how important this is Only the crashing/buggy version returns something different when its able to complete under -Mre=debug Now back to verbs, using `$2 - $1 <= $c ? '(FAIL)' : '(ACCEPT)'` [download] makes it fail in the exact same way, which is not too surprising Using PRUNE or `$2 - $1 <= $c ? '(SKIP)' : '(*ACCEPT)'` and its just like using `(?{`	[reply] [d/l] [select]
Re^4: Can't coerce UNKNOWN to string in substitution iterator (splain, (??{})) by AnomalousMonk (Archbishop) on Oct 11, 2016 at 01:48 UTC
Now back to verbs, using `$2 - $1 <= $c ? '(FAIL)' : '(ACCEPT)'` makes it fail in the exact same way ... WRT Special Backtracking Control Verbs (in Perl version 5.10+): Rather than using `(??{ ... })` to dynamically compile a `'(FAIL)'` or `'(ACCEPT)'` string into the regex, it may be advantageous to use the `"(?(condition)yes-pattern\|no-pattern)"` or `"(?(condition)yes-pattern)"` conditional expression constructs; they're generally a bit faster and IMHO much more clear. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]
Re^5: Can't coerce UNKNOWN to string in substitution iterator (splain, (??{})) by beech (Parson) on Oct 11, 2016 at 01:55 UTC
Hi ... it may be advantageous to use the ... :) let me know how it goes :D	[reply]