Suggestion for EXECON.

[John P]

(12-14-2014 05:28 PM)Snorre Wrote:  Hello JohnP,

I think your assumption about EXECON not doing symbolic calculation, i.e. not firing up the CAS, is right. You could do it by yourself:
EXECON("CAS("&1-&2")",l1,l2)
or -- easier to enter --
EXECON("CAS(""&1-&2"")",l1,l2)

It seems that EXECON is just repeatedly doing an EXPR(...) on the string after substituting each &n-pattern by the corresponding list's element. So you could put nearly arbitrary content (e.g. whole program chunks) into the pattern. For example, you could print out what's going on:
EXECON("LOCAL x; IFERR x:=EXPR(""&1-&2""); THEN x:=""Nah!""; END; PRINT(""&1-&2 → ""+x); x",l1,l2);

Greetings

Hello Snorre,

Thank you. Your suggestion works, but the question is: is that work around a problem or how the EXECON should work. If it is work around some problem in EXECON, I think they should fix it.

Cheers