| Default values for keywords [message #90780] |
Wed, 15 April 2015 11:21  |
Gordon Farquharson
Messages: 48
Registered: December 2010
|
Member |
|
|
I have been a long time IDL user, but it has only just occurred to me to ask whether there is a more elegant way to set default values for keyword parameters than
if n_elements(foo) then foo = !pi
I suspect there isn't, but this makes the start of most IDL routines very cluttered. It would be cool if there was a way to set the default value, like in C++ constructor calls. Maybe something like,
pro bar, AKP=akp
DEFAULT_BLOCK
apk = 1.0
END_DEFAULT_BLOCK
...
END
I'm sure somebody could come up with a more elegant syntax.
Just a thought.
Gordon
|
|
|
|
|
|
| Re: Default values for keywords [message #90782 is a reply to message #90781] |
Wed, 15 April 2015 11:36  |
Gordon Farquharson
Messages: 48
Registered: December 2010
|
Member |
|
|
On Wednesday, April 15, 2015 at 11:30:41 AM UTC-7, David Fanning wrote:
> I use SetDefaultValue from the Coyote Library. It only sets the value if
> needed, can check the range of values, can set Boolean values, etc.
How could I doubt that you would not have a solution. Very useful looking routine!
I imagine that very decade or so, some bright spark suggests this idea :-)
Written by: David W. Fanning, November 26, 2008, from suggestion by Carsten Lechte on IDL newsgroup on this date.
Gordon
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
