AHH! thank you
Computer Science Canada Passing array info to a procedure |
| Author: | Lucas [ Fri Mar 25, 2011 7:08 pm ] | ||
| Post subject: | Passing array info to a procedure | ||
What is it you are trying to achieve? I would like to do a procedure using data from a flexible array, but when i hit run it says "Compile time expression expected", and highlights "numpoints" in the line procedure transition (x, y : array 0 .. numpoints of real). All of the code i posted is in a module, not usre if that has anything to do with it. Anyway i can fix this?
Please specify what version of Turing you are using 4.1.1 |
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| Author: | Tony [ Fri Mar 25, 2011 7:15 pm ] |
| Post subject: | Re: Passing array info to a procedure |
Lucas @ Fri Mar 25, 2011 7:08 pm wrote: when i hit run it says "Compile time expression expected", and highlights "numpoints"
The value of numpoints is not known at the runtime. You might want to read the docs on flexible for details. |
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| Author: | Lucas [ Fri Mar 25, 2011 7:23 pm ] |
| Post subject: | RE:Passing array info to a procedure |
The value of numpoints at runtime is -1, i declare it earlier in the program. Or does that not make a difference? |
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| Author: | Tony [ Fri Mar 25, 2011 7:37 pm ] |
| Post subject: | RE:Passing array info to a procedure |
Sorry, I meant to say "at compile time" |
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| Author: | Lucas [ Fri Mar 25, 2011 7:44 pm ] |
| Post subject: | RE:Passing array info to a procedure |
Doesnt it just complie it when i hit "run"? |
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| Author: | Tony [ Fri Mar 25, 2011 8:13 pm ] |
| Post subject: | RE:Passing array info to a procedure |
Yes, but we don't know how it compiles it. For all we know it just sees that it's not a constant, and decides that it doesn't want to deal with that. |
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| Author: | Lucas [ Fri Mar 25, 2011 8:19 pm ] |
| Post subject: | RE:Passing array info to a procedure |
okay thx. anyway i can get around that? |
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| Author: | Tony [ Fri Mar 25, 2011 8:58 pm ] |
| Post subject: | Re: Passing array info to a procedure |
Yes. Use constants or flexible arrays, instead of regular ones. Tony @ Fri Mar 25, 2011 7:15 pm wrote: You might want to read the docs on flexible for details. |
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| Author: | Lucas [ Fri Mar 25, 2011 9:13 pm ] |
| Post subject: | RE:Passing array info to a procedure |
numpoints is a flexible array |
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| Author: | Tony [ Fri Mar 25, 2011 9:25 pm ] |
| Post subject: | RE:Passing array info to a procedure |
RTFM |
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| Author: | Lucas [ Sat Mar 26, 2011 7:32 am ] |
| Post subject: | RE:Passing array info to a procedure |
1. My mistake, numpoints is a number value of the length of the flexible array. 2. All my arrays are flexible, except for procedure transition (x, y : array 0 .. numpoints of real) , and when i made x, y, flexible array 0...numpoints of real i get a syntax error at flexible. I dont understand what you want me to use constants or flexible array is. 3. Yes, i followed your link, thx, and it says that the lower bounds must be known at compile time n stuff. 4. please, im new, and if u think that this is the stupidest message ever and that im a complete idiot, then by all means just dont answer |
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| Author: | Tony [ Sat Mar 26, 2011 12:21 pm ] | ||
| Post subject: | RE:Passing array info to a procedure | ||
I was trying to lead you towards this bit in the documentation link posted above Quote: There is no flexible array parameter type, although a flexible array can be passed to an array parameter with "*" as the upper bound. You should be able to say
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| Author: | Lucas [ Sat Mar 26, 2011 8:16 pm ] |
| Post subject: | RE:Passing array info to a procedure |
AHH! thank you |
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