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Answer: To express a null string, why would anyone use ...=q{} intead of ...= '' ?

by toolic (Bishop)
on Mar 03, 2010 at 16:02 UTC ( #826438=categorized answer: print w/replies, xml ) Need Help??

Q&A > strings > To express a null string, why would anyone use ...=q{} intead of ...= '' ? - Answer contributed by toolic

Damian Conway, in his book Perl Best Practices, considers it a better practice to use q{} (the single-quote operator with matching braces) instead of two single quotes because two single quotes is easily confused with a double quote for some font settings.

  • Comment on Answer: To express a null string, why would anyone use ...=q{} intead of ...= '' ?
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[1nickt]: Yaerox probably best to whip up an SSCCE demonstrating the failure in what you have now and post to SoPW as a question.
[Corion]: Yaerox: That's a somewhat hard problem. Encode solves the conversion part, but for guessing what encoding a file is in, that's the hard part
[Corion]: Yaerox: There is Encode::Guess, but that needs a limited set of inputs, and it also cannot handle multiple single-byte encodings
[Corion]: If you have a BOM, that's a really easy way to recognize UTF-8. Otherwise, you can try to decode a file from UTF-8, and if that works OK and doesn't crash, most likely the file was valid UTF-8
[Corion]: But as "ansi" (Latin-1?) is a single-byte encoding, any file is a valid ANSI file

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