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Re: Bug in SWITCH - ELSE: statement? [message #56231 is a reply to message #56230]

Fri, 12 October 2007 13:40

Matt[2]
Messages: 69
Registered: March 2007

Member

JD,

I think it's documentation bug. Look closely at the original poster's
emphasis.

>> **The ELSE statement is executed only if none of the preceding statement expressions match.**

That line of documentation is inconsistent with the way switch works
in IDL.

Of course Jean H just pointed out.

"SWITCH executes the first matching statement and any following
statements in
the SWITCH block. Once a match is found in the SWITCH block, execution
falls
through to any remaining statements. For this reason, the BREAK
statement is
commonly used within SWITCH statements to force an immediate exit from
the
SWITCH block."

So the documentation is orthogonal as far as I can tell, and the first
statement is the wrong one.

Matt

--
Matthew Savoie - Scientific Programmer
National Snow and Ice Data Center
http://nsidc.org

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[Message index]

		Re: Bug in SWITCH - ELSE: statement? By: R.G.Stockwell on Fri, 12 October 2007 13:56
		Re: Bug in SWITCH - ELSE: statement? By: Matt[2] on Fri, 12 October 2007 13:40
		Re: Bug in SWITCH - ELSE: statement? By: JD Smith on Fri, 12 October 2007 12:43
		Re: Bug in SWITCH - ELSE: statement? By: R.G.Stockwell on Thu, 11 October 2007 09:47
		Re: Bug in SWITCH - ELSE: statement? By: Paul Van Delst[1] on Thu, 11 October 2007 09:42
		Re: Bug in SWITCH - ELSE: statement? By: Paul Van Delst[1] on Thu, 11 October 2007 09:27
		Re: Bug in SWITCH - ELSE: statement? By: larkn10 on Thu, 11 October 2007 08:39

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