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| Pass an array as a parameter? |
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Posted by: LTee - 02-24-2011, 02:46 PM - Forum: Help & Support
- Replies (3)
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A question today, rather than a bug. :-)
Is it possible to pass an array as a parameter to a function or a sub?
And if so, does the function/sub receive a copy of the array or a pointer to the original? i.e. if I made changes to the array within a function, would those changes be local to the function or would they also be visible from the calling method?
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| ELSE issue? (*solved*) |
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Posted by: LTee - 02-23-2011, 04:29 PM - Forum: Bug Reports
- Replies (12)
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Have you had enough of me yet? :-D
I'm having a weird issue with ELSE, but I'm not sure if I'm doing something wrong or not. Take a look at this test program:
Code: dim num as ubyte
cls
num = 1
test()
num = 2
test()
num = 3
test()
num = 4
test ()
sub test
IF num = 1 THEN
PRINT "1"
ELSEIF num = 2 THEN
PRINT "2"
ELSEIF num = 3 THEN
PRINT "3"
ELSE
PRINT "X"
END IF
PRINT "---"
end sub
I would expect the output from this to be like this:
Code: 1
---
2
---
3
---
X
---
But it's actually like this:
Code: 1
---
2
---
3
X
---
X
---
Condition "3" is running correctly, but the final ELSE block is also being processed so you get two lines output if num is 3. Have I messed up the syntax there? The behaviour is certainly different to how it used to be, as an old program that used to be okay is now failing.
I've tried this in 2100 and also 1866 and it does the same in both, so it must've been a while since I compiled it! :-)
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| Small brackets-parsing glitch (*solved*) |
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Posted by: LTee - 02-23-2011, 01:38 PM - Forum: Bug Reports
- Replies (5)
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Messing around with some of my other code over lunchtime with the latest beta (2100), I discovered a small error when parsing brackets.
Take a look at this code:
Code: DIM test(10, 10) as UBYTE
DIM x as UBYTE
DIM y as UBYTE
x = 5
y = 5
PRINT test(x - 1, y)
PRINT test((x - 1), y)
PRINT test(x, y - 1)
PRINT test(x, (y - 1))
The final PRINT statement will not compile unless you remove the brackets from around the (y - 1). Strangely, the brackets seem to be okay if we're dealing with the first dimension of the array (so it's okay to have 'x - 1' in brackets), just not for the second. :-)
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| array bounds must be constant |
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Posted by: slenkar - 02-22-2011, 05:02 PM - Forum: Help & Support
- Replies (11)
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How do I create an array with an integer instead of a literal number?
I want to do this:
Code: DIM personX (numPersons) as ubyte
DIM personY (numPersons) as ubyte
DIM personHealth (numPersons) as ubyte
DIM personWeapon (numPersons) as ubyte
instead of:
Code: DIM personX (6) as ubyte
DIM personY (6) as ubyte
DIM personHealth (6) as ubyte
DIM personWeapon (6) as ubyte
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| UDG problem |
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Posted by: slenkar - 02-22-2011, 04:32 PM - Forum: Help & Support
- No Replies
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I have 2 graphics
factory.bin and select.bin
factory is 17 bytes and select.bin is 9 bytes
When I put include select.bin first the graphics work
but when i include factory.bin first the select.bin graphic is not shown on screen, it is just blank
both were created and exported from sevenup sprite editor.
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| too fast :) |
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Posted by: slenkar - 02-22-2011, 12:48 AM - Forum: Help & Support
- Replies (8)
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i have a cursor that i move around the screen with the keys but its too fast
when i press "p" it shoots half way across the screen, how do i make it move 1 square every half a second
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| clear ink from attr |
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Posted by: slenkar - 02-22-2011, 12:36 AM - Forum: Help & Support
- Replies (6)
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How do you use print to remove all ink from an attribute (8*8 square)
the opposite is 'print /::' to draw a block but i want to clear all ink away and leave the paper
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| Psyco for Python |
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Posted by: slenkar - 02-21-2011, 11:11 PM - Forum: Wishlist
- Replies (2)
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<!-- m --><a class="postlink" href="http://psyco.sourceforge.net/">http://psyco.sourceforge.net/</a><!-- m -->
Would this speed up compilation?
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| compiler error (*solved*) |
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Posted by: slenkar - 02-21-2011, 12:00 AM - Forum: Bug Reports
- Replies (3)
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i tried a simple program:
print "l"
and here is the output
Building file - wars.bas...
DOS: C:\Boriel Tm\ZX Basic Compiler\zxb.exe -T -B -a wars.bas
Traceback (most recent call last):
File "zxb.py", line 310, in <module>
File "zxb.py", line 244, in main
File "zxbtrad.pyc", line 1285, in traverse
File "zxbparser.pyc", line 823, in __get_type
AttributeError: 'SymbolSENTENCE' object has no attribute '_type'
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