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Undocumented TI-BASIC tricks
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Topic: Undocumented TI-BASIC tricks (Read 82909 times)
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tifreak
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My Kung Fu IS strong...
Undocumented TI-BASIC tricks
«
Reply #60 on:
December 26, 2005, 12:58:00 pm »
No problem, I hope you understand it...
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Spellshaper
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This is me. Or maybe not.
Undocumented TI-BASIC tricks
«
Reply #61 on:
December 27, 2005, 12:36:00 am »
yeah, now I do >D
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tifreak
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Undocumented TI-BASIC tricks
«
Reply #62 on:
December 27, 2005, 02:28:00 am »
Glad I could be of help.
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dragon__lance
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Undocumented TI-BASIC tricks
«
Reply #63 on:
December 28, 2005, 10:21:00 am »
now i've got a few questions, at the UnitedTi forum, there's a lot about max speed in basic. i'd like to know if they're true.
-are if-then statements faster than if statements?
-The more free ram, the faster the prgm will run?
-too much prgm in prgm menu, will run slower?
-does optimising improve speed, ex: not(A, A=0
-is while faster or repeat loops
Thanks if u can help...
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tifreak
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Undocumented TI-BASIC tricks
«
Reply #64 on:
December 28, 2005, 11:11:00 am »
If statements are faster, here is why:
Everytime the calculator sees a Then statement, or a loop, it registers how many End statements it sees. This of course takes little processing power (I think) but over a long period, it can cause a slow down, hence the memory leaks. If you just use an If statement, it doesn't need to worry about an End statement... Using an If statement only allows 1 command to be used, though, so watch yourself.
If I remember correctly, the amount of RAM does not slow down or speed up a program.
Actually, this will slow a program down a little, because that means it has to search the VAT entries for more programs.
Some optimizing does, but others can actually slow down a game.
If K=25:Then is actually faster then A-((K=25)-(K=26))->A because it is looking for the K with an If statement, but with the equation, it actually keeps doing the equation over and over. If K does not =25, then it ignores what ever comes after it.
I honestly don't know of a speed difference between the two, but there could be, if someone else here knows...
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tenniskid493
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Undocumented TI-BASIC tricks
«
Reply #65 on:
December 28, 2005, 11:26:00 am »
Both While and Repeat Loops are equal in speed. I believe Arcane Wizard answered that at UnitedTi. I'll try to find the link.
EDIT: Fixed it.
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tifreak
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Undocumented TI-BASIC tricks
«
Reply #66 on:
December 28, 2005, 11:33:00 am »
Don't you mean while and repeat?
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tenniskid493
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Undocumented TI-BASIC tricks
«
Reply #67 on:
December 28, 2005, 11:36:00 am »
Yup, sorry about that.
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dragon__lance
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Undocumented TI-BASIC tricks
«
Reply #68 on:
December 28, 2005, 11:41:00 am »
another questions: which are faster: subroutines or if-then statements?
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tenniskid493
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Undocumented TI-BASIC tricks
«
Reply #69 on:
December 28, 2005, 11:44:00 am »
If:Then's are faster than subroutines. However, if you are doing the same thing inside the If:Then statement multiple times, you could save a lot of space by using subroutines. Its sort of a trade off.
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dragon__lance
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Undocumented TI-BASIC tricks
«
Reply #70 on:
December 28, 2005, 11:48:00 am »
anyone kno some cool optimisations using boolean logic (xor, or, and, not). one that i kno that toggles the number would be:
:N(A=0)->A
this will toggle A from 0 to the number(N). anyone kno more?
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tenniskid493
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Undocumented TI-BASIC tricks
«
Reply #71 on:
December 28, 2005, 11:53:00 am »
For my walking engine, I used:
X-8(K=24)+8(K=26)->X
Y-8(K=25)+8(K=34)->Y
EDIT: Wait nvm, your the one who gave me that.
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Radical Pi
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Undocumented TI-BASIC tricks
«
Reply #72 on:
December 28, 2005, 12:35:00 pm »
All sorts of (), +, and = combinations can replace and/or.
Someone should make a Boolean converter for long expressions.
---EDIT---
And subtraction might be able to replace xor.
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dragon__lance
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Undocumented TI-BASIC tricks
«
Reply #73 on:
December 28, 2005, 02:46:00 pm »
wat do u mean? and ive got another question, will variable inputs run slower, faster, or same speed, for instance,
real(3,0,0,1
or
real(3,A,A,1 where A=0
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tenniskid493
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Undocumented TI-BASIC tricks
«
Reply #74 on:
December 28, 2005, 03:17:00 pm »
I believe they run the same, however I am not positive on that.
I belive what Radical Pi meant was that instead of doing
c1-->
CODE
ec1If X=1 and Y=3
Z+15->Zc2
ec2
You can do
c1
-->
CODE
ec1Z+15(X=1)(Y=3)->Zc2
ec2
If thats not what you meant, post an example.
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Undocumented TI-BASIC tricks