Constant command

J. Landman Gay jacque at
Thu Oct 14 15:26:04 EDT 2010

On 10/14/10 11:28 AM, DunbarX at wrote:
> About the constant command that Phil used in his process gadget. What does
> it do that a variable does not? I see it cannot be altered in the same
> handler, and I see that it can overRide a built-in constant, which might be
> useful. Anyone ever come up with a compelling reason to use such a thing?

In Phil's example a variable would work just as well. I use constants 
more often at the top of scripts.

In the case of scripts, local variables have to be set at some point 
before they will have a value, so I use those for things that are 
specific to the user setup (file paths I'll need repeatedly, for 
example.) Constant values are permanent until you change the script, so 
they're good for things that rarely change, like version numbers, lists 
of related objects you need to loop through often, and other 
script-related uses.

I almost never use constants inside a handler, but that's just personal 

Jacqueline Landman Gay         |     jacque at
HyperActive Software           |

More information about the Use-livecode mailing list