low level detail on case

Erik Friesen

How many time does a variable get checked in one case statement?
For example does variable get checked once or three times in the below code?

case variable
   "a":do
   "b":dontdo
   "c":doorelse

mpark

Not sure what you mean by "checked", but the case expression (in your example, just variable, but it could be more complicated) is evaluated once; the result of that evaluation is compared up to three times (against "a", "b", and "c" -- but of course if it matches "a" it won't keep comparing).

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Michael Park

PS, BTW, and FYI:
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Post Edited (mpark) : 9/10/2008 11:50:40 PM GMT

Erik Friesen

Right, but if the variable changes between comparisons it still uses the original, right?

Paul Baker

Im 95% certain there is only a single evaluation of "variable".

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Paul Baker
Propeller Applications Engineer

Parallax, Inc.

hippy

Paul's correct. Once the particular choice to use has been selected the code associated with it is executed and then the entire case is over and done with.