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Re: When Ptr_New doesn't work [message #29017 is a reply to message #28954]

Wed, 23 January 2002 10:07

Pavel A. Romashkin
Messages: 531
Registered: November 2000

Senior Member

I think the key here is, anything in parenthesis gets *evaluated* and as
such is an expression. And it is not really surprising that one is not
allowed to assign a value to an expression. This is the strength of IDL
- it creates temporary variables as expressions, and allows to use them
just like named variables. Unlike, say, IGOR Pro that requres you to
define a named variable to even plot it.

Pavel

Richard Younger wrote:
>
> This seems very strange to me. I think of parenthesis as not modifying
> their arguments at all, since they should (in my own little idl, er,
> ideal world) change only precedence and not value.

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[Message index]

		When Ptr_New doesn't work By: badenes on Tue, 22 January 2002 03:42
		Re: When Ptr_New doesn't work By: John-David T. Smith on Wed, 23 January 2002 11:13
		Re: When Ptr_New doesn't work By: Pavel A. Romashkin on Wed, 23 January 2002 10:07

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