May have been answered, but I couldn't find it.

I'm trying to make a backspace key in a typing program and I'm currently doing:

set [i v] to [0]
set [stringshaved v] to []
repeat ((length of(string))-(1))
change[i v] by [1]
set [stringshaved v] to (join (stringshaved)(letter (i) of (string))
end
set [string v] to (stringshaved)

and it's not very effective when the string gets long.

Thanks.

you can save 2 varaibles with this :D
also you can cut the huge string (while writing) into lots of small strings and save then in a list to edit the last item

all but last letters of (Input)
define all but last letters of (str)
set [Input v] to (letter (1) of (str))
repeat ((length of (str))-(2))
set [Input v] to (join (Input)(letter ((length of (Input))+(1)) of (str)) )
end

An alternative is to put each new character in a list. You can set a variable to a list and if it only contains single characters you'll get a string just containing those characters. That gives you easier options for deleting characters.

ShinigamiBlacky wrote:

you can save 2 varaibles with this :D
also you can cut the huge string (while writing) into lots of small strings and save then in a list to edit the last item

all but last letters of (Input)
define all but last letters of (str)
set [Input v] to (letter (1) of (str))
repeat ((length of (str))-(2))
set [Input v] to (join (Input)(letter ((length of (Input))+(1)) of (str)) )
end

i have tried this in my projects and it does not work properly.
it turns the command “print (argument)” into “ppp”

Try this:

Create a list named stl (string-to-list)

define remove last letter of (string)
delete all of [stl v] :: list // optional
set [i v] to [1] // needed for runing for loop
repeat ((length of (string)) - (1)) // loop to convert string into list (-1 because we don't want the last letter)
add (letter (i) of (string)) to [stl v] // simply adds letter at particular index in the string to list stl
change [i v] by (1) // changes index by one for the next letter
end
set [output v] to (stl :: list) // returns the text with removed last letter

Now use the

(output)

variable to get the removed letter from the text!