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+--- Thread: Get "de-string" an expression (/thread-3321.html)
Get "de-string" an expression - Angus - 03-09-2015 01:11 PM
When given a String like "#AAh". How can that be changed to an integer constant #AAh?
I had in mind that CAS(String) is a way to convert a String to its (cas)meaning. Is that right? And why would that not work in the given example.
Please also look at the code:
Code:
EXPORT INT_HEX(X)
BEGIN
CASE
IF TYPE(X)==0 THEN R→B(X,32,4); END;
IF TYPE(X)==1 THEN SETBASE(X,Base); END; //Base has already been set to 3
IF TYPE(X)==2 THEN CAS("#"+X+"h"); END; //input String like "AA" should return #AAh
DEFAULT "";
END;
// R→B(X,32,4);
END;edit: remembering Han's tutorial about cas programs I tried locally assigning str:="#"+X+"h"; CAS(str); which SEEMS to work better, but apparently always leads to everything but the desired result.... dec semms to be preferred.
Can someone help with the functionality I am looking for?
RE: Get "de-string" an expression - Angus - 03-09-2015 01:24 PM
Code:
EXPORT INT_HEX(X)
BEGIN
LOCAL str;
CASE
IF TYPE(X)==0 THEN R→B(X,32,4); END;
IF TYPE(X)==1 THEN SETBASE(X,Base); END; //Base is already set to 3
IF TYPE(X)==2 THEN str:="#"+X+"h"; INT_HEX( CAS(str)); END; //input String like "AA" should return #AAh
DEFAULT "";
END;
// R→B(X,32,4);
END;That works. But I do not understand what CAS() is doing to integers.
RE: Get "de-string" an expression - DrD - 03-09-2015 01:56 PM
R→B(approx("#AAh")); // Who would have thought?
RE: Get "de-string" an expression - Angus - 03-09-2015 02:02 PM
Cool to see an other working solution! Thank you.
However is using approx() so obvious that I should sense cynicism in your comment? I am not sure.
RE: Get "de-string" an expression - DrD - 03-09-2015 02:17 PM
No cynicism intended, although I see your thinking on my poor phrasing! It's just that I tried various tools, while scanning through the catalog, and happened to land on "approx()." I never would have guessed that to be a viable solution! Damn good thing it wasn't Zapprox, or I would've been here until the next blue moon, whenever that is!
-Dale-
RE: Get "de-string" an expression - Angus - 03-09-2015 02:38 PM
How would you classify your solution? Is it intended or logical behaviour or is it just working out of luck? Or to put it in other words? How high of a risk do you see to be confronted with non working code after a future firmware update?
The cleanest solution is the best solution. What could it be.
RE: Get "de-string" an expression - cyrille de brébisson - 03-09-2015 05:11 PM
Hello,
is EXPR what you are looking for?
Cyrille
RE: Get "de-string" an expression - Angus - 03-10-2015 05:47 AM
Best solution I would say :-) Thank you