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using a variable to call a variable without if statements?
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zlittell



Joined: 08 Feb 2012
Posts: 13

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PostPosted: Thu Mar 08, 2012 1:46 am     Reply with quote
thats what I figured... there was probably a way to do what I wanted but not as efficiently as the idea sounds itself. I will just be sticking with the array I have working now.

I can't wait to finish this project. I want to spend some extra time making some neat little examples and libraries that I can put out there for everyone to use.

gpsmikey I will be giving that article a read when I get a chance to sit down with some free time.

I am also excited to play with my MikroE Stellaris ARM board thats coming in the mail! its nerd christmas haha

-zack-
Ttelmah



Joined: 11 Mar 2010
Posts: 19803

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PostPosted: Thu Mar 08, 2012 5:36 am     Reply with quote
dorinm wrote:
you need an evaluator ...
tx_msg[2]=("P" + profile + "M1") ..mainly, to concatenate " "P" + profile + "M1" " into a string (a lot of mcu cycles!) , then evaluate the expression and compare to your defines ... basically it can be done, but would you waste so many mcu cycles?


No....

Think about it. tx_msg[2], can take a _character_, not a string.
He seemed to want to build a 'variable name' from a string plus the contents of a variable, and then access the character in the variable with this name.
Not possible, unless you build your own table of names, and search in this with string compare functions.
Variable names, don't even exist in the running code.

Best Wishes
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