Hi everyone, I have a Ti-Basic related question concerning strings. I need a String to number converter, meaning the string comprises of numbers and I want it to easily convert to an appropiate number. Here is some help to understand it.
Code:
:"123456->Str1
:Length(Str1)->Dim(LNUM
://LNUM is a list, named NUM
:For(A,1,Length(Str1
:sub(Str1,A,1->LNUM(A
://Invalid but the point... does anyone know how to convert easily?
:End
What I did:
Code:
:"12345->Str1
:Length(Str1)->dim(LNUM
:For(A,1,Length(Str1
:sub(Str1,A,1)->Str0
:If Str0="1
:1->B
:If Str0="2
:2->B
:If Str0="3
:3->B
://etc
:B->LNUM(A
:End
My way is pretty slow and not very effecient, does any one have a good optimized (fast) way? Thanks.
expr() should do the trick.
You can use the
expr( command. So:
Code: expr("123
Will return the number 123.
So:
Code:
:expr(sub(Str1,A,1))->LNUM(A
Thanks guys.
Code: expr(sub(Str1,A,1->LNUM(A
Would be even better (saves 2 bytes). And, depending on how you're actually using it, if you can have the numbers already with commas, you wouldn't even need a loop:
Code: "1,2,3,4,15->Str1
expr("{"+Str1->LNUM
merthsoft wrote:
Code: expr(sub(Str1,A,1->LNUM(A
Would be even better (saves 2 bytes).[/code]
It's 3 bytes, not 2.
I removed two parens, how does that save 3 bytes?
merthsoft wrote:
I removed two parens, how does that save 3 bytes?
I think it's just Blue_Bear failing to read posts carefully, as usual. 
Take a look at my Graph3DP topic for more examples of that. It's definitely 2 bytes.
I believe he assumed there was a parenthesis at the end after the A.
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