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Re: Common Perl Pitfalls

by JavaFan (Canon)
on Apr 09, 2012 at 23:28 UTC ( [id://964228]=note: print w/replies, xml ) Need Help??


in reply to Common Perl Pitfalls

The thing is, Perl treats the result of a false logical test as the empty string (in scalar context)
It's actually a dual (triple) var: 
$ perl -MDevel::Peek -wE '$x = 1 < 0; Dump $x'
SV = PVNV(0x97f45a8) at 0x9805ad0
  REFCNT = 1
  FLAGS = (IOK,NOK,POK,pIOK,pNOK,pPOK)
  IV = 0
  NV = 0
  PV = 0x9801438 ""\0
  CUR = 0
  LEN = 4

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Re^2: Common Perl Pitfalls
by Joe_ (Beadle) on Apr 10, 2012 at 18:12 UTC

    I will have to RTFM on that one :)

[reply]

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