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Re: Variable length lookbehind not implemented in regex

by AnomalousMonk (Chancellor)
on Feb 12, 2013 at 20:31 UTC ( #1018443=note: print w/replies, xml ) Need Help??


in reply to Variable length lookbehind not implemented in regex

... fails with the error "Variable length lookbehind not implemented in regex" ... ways around this ...

See Re: perl regexp question excluding strings for one technique for emulating variable-length negative look-behind.

Update: See also the general discussion of this topic in Why is variable length lookahead implemented while lookbehind is not? and the particular example in Re^2: Why is variable length lookahead implemented while lookbehind is not?.

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[Corion]: Hmm. I think overnight I decided on simplifying some code. I have plugin classes that do data import (.csv, .yml, .json) and for that create objects on which then ->load() is called. But YAML::XS doesn't have an object, so I wrote my own wrapper.
[Corion]: This evening, I'll kill that wrapper again, and just call LoadFile() in the plugin class directly instead of creating a go-between object for no real gain.
[Corion]: Writing these import plugins was really nice though - in about 2 hours, I had imports for CSV, YAML and JSON, and adding XLS(X), SQLite (or DBI) data sources is also trivial. I'm idly wondering about separating the plugin into transport+parser, so ...
[Corion]: ... http:// URLs could be retrieved and then parsed, but I think that that would be overkill for a toy static site generator ;)

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