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Re: switch with case 0 [message #182594 is a reply to message #182589]

Sat, 17 August 2013 14:15

Fiver
Messages: 35
Registered: July 2013

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Member

On 2013-08-17 06:55, Fiver wrote:
> I know how to avoid the problem, I'm just wondering what kind of
> comparison is used that makes "foo" equal to 0? The manual mentions
> "loose comparison", but this is even looser than usual.

Ah, please disregard. This is exactly how loose typing in PHP is
supposed to work (for some reason). "foo" == 0 indeed evaluates to true.
I work with a lot of different languages, often at the same time, so I
sometimes get confused by the different type coercion rules in weakly
typed languages. FWIW, in JavaScript, Python, Ruby, Bash and others this
comparison would evaluate to false; Perl issues a warning; strongly
typed languages like Java won't even compile it.

For the record, I had changed the problematic switch() to in_array()
with strict type checking before even posting the question.

thanks,
5er

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[Message index]

		switch with case 0 By: Fiver on Sat, 17 August 2013 04:55
		Re: switch with case 0 By: J.O. Aho on Sat, 17 August 2013 06:35
		Re: switch with case 0 By: The Natural Philosoph on Sat, 17 August 2013 07:29
		Re: switch with case 0 By: Luuk on Sat, 17 August 2013 07:51
		Re: switch with case 0 By: Thomas Mlynarczyk on Sat, 17 August 2013 11:16
		Re: switch with case 0 By: Peter H. Coffin on Sat, 17 August 2013 15:56
		Re: switch with case 0 By: The Natural Philosoph on Sat, 17 August 2013 16:45
		Re: switch with case 0 By: Tim Streater on Sat, 17 August 2013 17:58
		Re: switch with case 0 By: The Natural Philosoph on Sat, 17 August 2013 18:39
		Re: switch with case 0 By: Thomas Mlynarczyk on Sat, 17 August 2013 19:36
		Re: switch with case 0 By: Thomas Mlynarczyk on Sat, 17 August 2013 20:14
		Re: switch with case 0 By: Norman Peelman on Sat, 17 August 2013 17:56
		Re: switch with case 0 By: Thomas Mlynarczyk on Sat, 17 August 2013 19:55
		Re: switch with case 0 By: The Natural Philosoph on Sat, 17 August 2013 20:04
		Re: switch with case 0 By: Thomas Mlynarczyk on Sat, 17 August 2013 20:32
		Re: switch with case 0 By: Richard Yates on Sat, 17 August 2013 22:20
		Re: switch with case 0 By: Fiver on Sat, 17 August 2013 20:37
		Re: switch with case 0 By: Norman Peelman on Sat, 17 August 2013 23:26
		Re: switch with case 0 By: The Natural Philosoph on Sun, 18 August 2013 11:54
		Re: switch with case 0 By: Norman Peelman on Sun, 18 August 2013 00:23
		Re: switch with case 0 By: Thomas Mlynarczyk on Sun, 18 August 2013 13:22
		Re: switch with case 0 By: Norman Peelman on Sun, 18 August 2013 15:20
		Re: switch with case 0 By: Thomas Mlynarczyk on Sun, 18 August 2013 16:28
		Re: switch with case 0 By: Norman Peelman on Sun, 18 August 2013 19:16
		Re: switch with case 0 By: Norman Peelman on Sun, 18 August 2013 22:04
		Re: switch with case 0 By: Thomas Mlynarczyk on Sun, 18 August 2013 22:17
		Re: switch with case 0 By: Thomas Mlynarczyk on Sun, 18 August 2013 22:13
		Re: switch with case 0 By: The Natural Philosoph on Sun, 18 August 2013 23:35
		Re: switch with case 0 By: Norman Peelman on Mon, 19 August 2013 10:30
		Re: switch with case 0 By: Norman Peelman on Mon, 19 August 2013 02:13
		Re: switch with case 0 By: Thomas Mlynarczyk on Mon, 19 August 2013 17:55
		Re: switch with case 0 By: Thomas 'PointedEars' on Mon, 19 August 2013 08:18
		Re: switch with case 0 By: Thomas Mlynarczyk on Mon, 19 August 2013 17:39
		Re: switch with case 0 By: Fiver on Sat, 17 August 2013 14:15
		Re: switch with case 0 By: Norman Peelman on Sat, 17 August 2013 17:28

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