Is there a maximum variable length?

-Fuzzbutt-

I was just wondering if there is a maximum length for a variable, because a project I'm working on requires it to be at least 21600 digits long, and it would be nice if it could be 1382400 digits long. But right now it seems like it cannot get past 10240 digits.

Thanks!

-Fuzzbutt-

You have just read great wisdom from -Fuzzbutt-.

TheHockeyist

10240 digits is probably the limit. Could you try compressing the data if possible?

-Fuzzbutt-

TheHockeyist wrote:
10240 digits is probably the limit. Could you try compressing the data if possible?

Possibly. The project is a screen scanner that finds the color of pixels on the screen. Then it records the color in an 8-digit number, adds it to a variable, and saves it to be drawn again any time from pen.

You have just read great wisdom from -Fuzzbutt-.

myhf

A variable can hold up to 10240 unicode characters. You can use a reasonable-size lookup table to convert each 1-byte number into a unique character, or an absurdly large lookup table to convert larger numbers into unique characters.

define save: (number)
set [lookup table v] to [0123456789abcdefghijklmnopqrstuvwxyzABC...]
set [string v] to (join [(string)] [(letter (number) of [lookup table])])

define restore: (string)
set [i v] to [1]
repeat until <[i] = (length of [(string)]) >
  set [char v] to (letter (i) of [(string)])
  set [j v] to [1]
  set [number v] to []
  repeat until <<[j] = (length of [(lookup table)]) > or <not <[(number)] = [ ]>>>
    if <(letter (j) of [(lookup table)]) = [(char)]> then
      set [number v] to (j)
      ... // do something with number
    end
  end
  change [i v] by (1)
end

-Fuzzbutt-

myhf wrote:

A variable can hold up to 10240 unicode characters. You can use a reasonable-size lookup table to convert each 1-byte number into a unique character, or an absurdly large lookup table to convert larger numbers into unique characters.

define save: (number)
set [lookup table v] to [0123456789abcdefghijklmnopqrstuvwxyzABC...]
set [string v] to (join [(string)] [(letter (number) of [lookup table])])

define restore: (string)
set [i v] to [1]
repeat until <[i] = (length of [(string)]) >
  set [char v] to (letter (i) of [(string)])
  set [j v] to [1]
  set [number v] to []
  repeat until <<[j] = (length of [(lookup table)]) > or <not <[(number)] = [ ]>>>
    if <(letter (j) of [(lookup table)]) = [(char)]> then
      set [number v] to (j)
      ... // do something with number
    end
  end
  change [i v] by (1)
end

I kinda not really get that. But I get the general idea. And now that I think of it, that would be a good way to do it. I could also do it with a list to simplify it.

You have just read great wisdom from -Fuzzbutt-.

8bitprogrammer

Why dont you do 2 variables joined together?

(join (Part 1) (Part 2))

Then you can technically make infinite length, “Variables”

Last edited by 8bitprogrammer (May 6, 2016 12:41:18)

drmcw

Using a list is the only way to break the 10240 limit. Store each character in a list then when you want to use the whole string use the list reporter

https://scratch.mit.edu/projects/24934494/

Last edited by drmcw (May 6, 2016 13:38:14)

10 !
ScratchVaders or Galaga?
Maybe Eliza can help you decide?

jerrymonkey

No no no no no no no You guys are wrong.

A standard “Global Variable” (Is not a cloud variable, but for all sprites) can handle –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (Numbers) which is a “Long” datatype.

And so if you do 3213546543132456315635431234523543 mod 2 you will get 0 (Overloads and should get 1)

Last edited by jerrymonkey (Feb. 11, 2017 10:36:03)

deck26

jerrymonkey wrote:
No no no no no no no You guys are wrong.

A standard “Global Variable” (Is not a cloud variable, but for all sprites) can handle –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (Numbers) which is a “Long” datatype.

And so if you do 3213546543132456315635431234523543 mod 2 you will get 0 (Overloads and should get 1)

If you build it up character by character and treat it as text a variable will hold 10240 characters - if you're using join to create it it is going to be treated as text anyway.

So perfectly possible to hold 10240 digits in a variable but you have to be careful how you use it - don't treat it as a number!

drmcw

jerrymonkey wrote:
No no no no no no no You guys are wrong.

A standard “Global Variable” (Is not a cloud variable, but for all sprites) can handle –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 (Numbers) which is a “Long” datatype.

And so if you do 3213546543132456315635431234523543 mod 2 you will get 0 (Overloads and should get 1)

No no no no no no no You are wrong.

10 !
ScratchVaders or Galaga?
Maybe Eliza can help you decide?

LittlePuke

Why is there a imit anyway?

4424dev

LittlePuke wrote:
Why is there a imit anyway?

This is so Scratch can handle the variables.

deck26

LittlePuke wrote:
Why is there a imit anyway?

Most computer languages (if not all) will set limits for each variable type - generally based on the number of bytes allocated to each variable.

chexbox

Yesterday I posted about the same thing with a list item. I still cant get over 10240 digits.

Charles12310

drmcw wrote:
Using a list is the only way to break the 10240 limit. Store each character in a list then when you want to use the whole string use the list reporter

https://scratch.mit.edu/projects/24934494/

That's what I usually so for very long strings.

A few internet communication companies want to corrupt the internet by getting rid of net neutrality. Stop Them!

capecod18

how do you lower a variable size? i need the variable to be only 3, but the lowest i can get is 100

RealTheFluffyKing

Use the block set (variable) to (3)

Last edited by RealTheFluffyKing (Dec. 8, 2018 05:30:05)

McNichollFam

my project needs a very long cloud variable so i can't use the list workaround.

codeman1044

Please don't necropost. If you need help with a project, create your own topic.

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