is evaluation order defined, and evaluation of conditionals

[Bob Sneidar]

I believe this was discussed in a thread long ago. To my knowledge, logical expressions are evaluated left to right. Mathematical expressions of course, follow the order of operations found here: http://en.wikipedia.org/wiki/Order_of_operations

I will be corrected if I am mistaken. 

Bob


On Jun 25, 2012, at 4:17 PM, Dr. Hawkins wrote:

> Is the order in which expressions will be evaluated defined int LiveCode
> 
> For example, if I have fields such as live_cats live_dogs and such,
> some but not others of which have corresponding fields dead_cat,
> dead_mouse, etc, can if have a construct that comes to
> 
> switch
>  case exists(dead_cat) and  ("bad_smell" is among the words of dead_cat)
> 
> If it is defined that the leftmost expression is evaluated first, and
> the right-hand only if needed to resolve the "and," I would expect
> this to work.
> 
> If it doesn't, though, things get more difficult:  using the exists()
> within the switch throws me down that path, and only down it can I
> check bad_smell.
> 
> -- 
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