Re: Modification of a read-only value attempted

Also, when writing regexes to parse strings like this, watch out for "greedy." Ordinarily a regex will "greedily" try to match the longest possible string, and this is often the wrong thing to do here.

Comment on Re: Modification of a read-only value attempted

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Re^2: Modification of a read-only value attempted by ikegami (Patriarch) on May 21, 2020 at 14:50 UTC
Ordinarily a regex will "greedily" try to match the longest possible string No. `# Matches 2 chars at pos 0, not 6 chars at pos 2. "acabbbbc" =~ /ab*c/` [download] Greediness applies to individual regex atoms, causing those to match as much as possible at the current position.	[reply] [d/l]
Re^2: Modification of a read-only value attempted by AnomalousMonk (Archbishop) on May 21, 2020 at 15:11 UTC
Further to ikegami's reply: The rule is to find the leftmost longest match. This has tripped me up more that once! Give a man a fish: `<%-{-{-{-<`	[reply] [d/l]