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Re: AND statements [message #14451 is a reply to message #14428]

Wed, 03 March 1999 00:00

Steve Scheele
Messages: 6
Registered: February 1999

Junior Member

>> If you write some code like this:

>> test=Ptr_New()

>> IF Ptr_Valid(test) AND Size(*test, /type) NE 10 THEN print, *test

>> ....can you always guarantee that it will not try to evaluate the second
>> statement if the first one was false - or is this a dangerous tactic to
>> adopt?

I recently took an IDL course from RSI and asked the instructor almost
exactly the same question. I got the same answer you have been getting - no!

It is possible is C and it is not regarded as dangerous. I asked the
instructor to request that this capability be added - I don't hold out much
hope.

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[Message index]

		Re: AND statements By: Steve Scheele on Fri, 05 March 1999 00:00
		Re: AND statements By: Steve Scheele on Wed, 03 March 1999 00:00
		Re: AND statements By: steinhh on Mon, 01 March 1999 00:00
		Re: AND statements By: philaldis on Mon, 01 March 1999 00:00
		Re: AND statements By: steinhh on Mon, 01 March 1999 00:00

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