Update: Post recomposed for better readability

> Also - what other languages treat "0" as false?

  • JavaScript

    Num yes Str no

    >>> !! 0
false
>>> !! "0"
true

    [download]

  • Python

    Num yes Str no

    >>> not not 0
False
>>> not not "0"
True

    [download]

  • Ruby

    Num no Str no

    irb(main):002:0> !! 0
=> true
irb(main):003:0> !! "0"
(irb):3: warning: string literal in condition
=> true

    [download]

  • Perl

    Num yes Str yes

      DB<102> !! 0
 => ""

  DB<103> !! "0"
 => ""

    [download]

    Cheers Rolf

    ( addicted to the Perl Programming Language)

    In reply to Re^3: Wrong idioms by LanX
    in thread Wrong idioms by McA

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