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==== Arithmatic Operands (AREV Specific) ====
=== At 29 JAN 2009 02:12:01PM Terry Rainville wrote: ===
 
{{tag>"AREV Specific"}}
 
<QUOTE>
Hello All,



Arithmatic Operations Substitution



Eg  Val Operator Val

    10 * 10

    10 / 10

    10 - 10 

    10 + 10



Operand=*'

Ans=Val1 Operand Val2



How do I use a variable as the operand instead of actully putting the operand in the equation.



I solved this using a Case statement but I wanted to know if there is a way to do this in one line of code where the Operand Variable just changes.



Thanks!!!
</QUOTE>
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=== At 30 JAN 2009 12:49PM Victor Engel wrote:  ===

<QUOTE>I don't think there is a way to do this. I'm curious what application would benefit from such a scheme.

</QUOTE>

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=== At 30 JAN 2009 09:11PM S Smith wrote:  ===

<QUOTE>One way is to write a symbolic (maybe in voc), use dictcompile, run calculatex, and then call the function name stored in a variable @functionname(x,y) etc...



I once wrote an interpreter program to do this on a screen so that you could write and resolve formulae on the fly.



</QUOTE>

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=== At 02 FEB 2009 01:52PM Terry Rainville wrote:  ===

<QUOTE>Victor



Val1 Operand Val2



Would be alot easier than



Operand=*'

begin case

  case Operand=*' ; Val1 * Val2

  case Operand=/' ; Val1 / Val2

  case Operand=+' ; Val1 + Val2

  case Operand=-' ; Val1 - Val2

end case



And this could be used in any application where you want to allow arithmatic operations on Values by the users.

Point being I dont want to have to code the same line of code 4 times in a case statement when I could do it in 1 line if it is possible.

</QUOTE>

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=== At 02 FEB 2009 04:10PM Victor Engel wrote:  ===

<QUOTE>I understand what you're trying to do. I just am trying to get a feel for why? The only things I can think of off the top of my head that would benefit from such a thing would be calculator or spreadsheet programs.



Anyway, I think the operators must be evaluated at compile time, not run time, which is why the functionality you want doesn't exist.

</QUOTE>


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