Simple Question - Passing the expression from a switch()

ID:2811451
 
Aug 11 2022, 8:09 pm (Edited on Aug 11 2022, 8:27 pm)
(See the best response by Kozuma3.)
Code:
mob
    var
        A = 1
        B = 2
    verb
        SwitchTest()
            switch(TestProc())
                if(0)
                    world<<"Zero"
                else
                    world<<"The result is... [?]"
//How do I make this pass the result of TestProc without calling TestProc again?
    proc
        TestProc()
            return A + B


Problem description:
Basically as above - If a switch is taking the return from a procedure, how can I pass that evaluated expression on to the "if" statements?

(My workaround is just to set var/Temp = TestProc(), then evaluate Temp in the switch)
Aug 11 2022, 8:28 pm
Best response
 
mob
    var
        A = 1
        B = 2
    verb
        SwitchTest()
            var i = TestProc(A,B)
            switch(i)
                if(0)
                    world << "Zero"
                else
                    world << "The result is [i]"
proc/TestProc(A,B)
    return A+B


or you could do

var i
switch((i = TestProc(A,B)))
Aug 11 2022, 9:20 pm
You shouldn't need a temporary var. The switch() statement basically pushes the result of the proc onto the stack and uses that to compare to its if/else cases.
Aug 11 2022, 9:26 pm
In response to Lummox JR
Lummox JR wrote:
You shouldn't need a temporary var. The switch() statement basically pushes the result of the proc onto the stack and uses that to compare to its if/else cases.

Think the issue he's having is world << "Result is [?]" where ? would be the value of the proc
Aug 11 2022, 10:09 pm
In response to Kozuma3
Alrighty, that's what I had ended up doing anyways. Good to know I can embed the statement in the switch at least. Thanks!
Aug 11 2022, 10:10 pm
In response to Kozuma3
Kozuma3 wrote:
Lummox JR wrote:
You shouldn't need a temporary var. The switch() statement basically pushes the result of the proc onto the stack and uses that to compare to its if/else cases.

Think the issue he's having is world << "Result is [?]" where ? would be the value of the proc

Yep, exactly that - maybe I should have worded it better. Temp vars it is.