Your hash of coderefs is generally called a dispatch table in perl. It's an excellent choice, and a popular enough idiom to cause no confusion.

You may want to look into PerlIO::via, which addresses just your problem - preprocessing file I/O. It permits setting the processing scheme within the open mode argument, or with binmode.

After Compline,
Zaxo

In reply to Re: Implementing filters as callbacks / hashrefs / regexes by Zaxo
in thread Implementing filters as callbacks / hashrefs / regexes by clinton

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