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Re: Declaring constants [message #32807]

Thu, 07 November 2002 14:38

R.G. Stockwell
Messages: 363
Registered: July 1999

Senior Member

Nidhi Kalra wrote:
> Is there any way to declare constants in IDL as you might in C header
> files or Java classes?
>
> -Nidhi

You have a couple of options.

1) Create a function, for instance

function twopi
return,2*!dpi
end

1b) similarly you could put it in an object

2) make a system variable (and perhaps put it in our startup.pro)
DEFSYSV, '!twopi', 2*!dpi

These would come in very handy should the value of pi ever change :)

Cheers,
bob stockwell

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		Re: Declaring constants By: R.G. Stockwell on Thu, 07 November 2002 14:38
		Re: Declaring constants By: thompson on Thu, 07 November 2002 13:52

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