hi! i'm having a bit of trouble with my script, i'm trying to identify certain characters in a word and replace them with a symbol.

i have managed to do this by using the `contains` block but i was wondering if there is an alternative to this as i do not have a `contains` block in the version of scratch that i am required to use!

any help would be massively appreciated, i've been wracking my brain for nearly two weeks over this

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

Are you perhaps looping through the word and forgetting to implement the control variable when you hit a character that needs replacing?

deck26 wrote:

Are you perhaps looping through the word and forgetting to implement the control variable when you hit a character that needs replacing?

it is very much possible, i am having a hard time understanding how things work in scratch which is what is impeding me in solving my problem. i'm not too sure how to go about how to implement the change to certain characters instead of returning a string that is all symbols.

In pseudo code what you probably need is something like

set newstring to blank
set index to 1
repeat until index > length of input
if letter (index) of input is in specified set append symbol to newstring
else letter index of input to newstring
increase index by 1
end

In Scratch 2 the list blocks DO have the contains block so that should be available to you and you can check if list contains letter(index) of input.

If you have no access to any contains block you'd need to have an inner loop that ran through all the letters that needed replacing until you either found a match or ran out of things to try. So for the letter you're checking you would know whether to use it or replace it but you'd have to repeat the inner loop for the next letter.

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

…Yeah I think you offended every 2.0 person LOL
Anyway I think I got it:

The first repeat block just copies over all characters, and it just scans through the length of the 2nd string characters using an index, then checks if the string has the same length every time so it can end. And if it's equal to string2, then it contains it and you have to delete the first index to keep checking.

medians wrote:

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

…Yeah I think you offended every 2.0 person LOL
Anyway I think I got it:

My impression is they're only replacing single characters with a symbol if they're in a specificied set rather than searching for a substring to replace.

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

My i ask why?

(And if ur constrained to that please use Snap! if you can)

deck26 wrote:

medians wrote:

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

…Yeah I think you offended every 2.0 person LOL
Anyway I think I got it:

My impression is they're only replacing single characters with a symbol if they're in a specificied set rather than searching for a substring to replace.

yeah, that's more along the lines of what i'm hoping to do. not to discredit @medians work of course, i'm very grateful for their solution!

my solution so far contains a list of all the characters i wish to replace, and a loop which i am trying to get to ‘search’ the user-input word for any characters that need to be replaced, i have access to the list contains block but i don't think i am going the right way about actually replacing the specified letters if it's returning a string of symbols, or not actually recognising that a word contains one of the specified letters.

<[ v] contains [thing] ?>

cookieclickerer33 wrote:

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

My i ask why?

(And if ur constrained to that please use Snap! if you can)

it's for a project but the specified software we have to use is scratch 2.0 and not 3.0, i have no qualms with 2.0 i just can't wrap my head around this problem specifically!

laurensmiddy wrote:

cookieclickerer33 wrote:

laurensmiddy wrote:

medians wrote:

Oh god you’re in 2.0, right?
Check this, but I don’t know if it will work at this point:
https://en.scratch-wiki.info/wiki/Checking_if_a_String_Contains_a_String
You could also probably find a way to put every character in a list and then check for 1-4 (if the length of the 2nd input is 4), then 2-5, then 3-6, etc, or something like this.

thank you for the suggestion! unfortunately yes i'm constrained to 2.0

i have tried making a list with the characters i'd like to replace but my output is replacing the entire word with symbols as opposed to what i specified! just wondering if there's something i'm forgetting to add?

My i ask why?

(And if ur constrained to that please use Snap! if you can)

it's for a project but the specified software we have to use is scratch 2.0 and not 3.0, i have no qualms with 2.0 i just can't wrap my head around this problem specifically!

That’s stupid..

Well you could do

define (1) contains (2)
For each [counter v] in (length of (1::custom)){
if <(letter (counter) of (1::custom)) = (2::custom)> then
Set [return v] to [true]
Stop [this script v]
Else
Set [return v] to [false]
}::control

That for each block is a hidden block that works like

repeat (length of (1::custom))
change [counter v] by (1)
end

laurensmiddy wrote:

my solution so far contains a list of all the characters i wish to replace, and a loop which i am trying to get to ‘search’ the user-input word for any characters that need to be replaced, i have access to the list contains block but i don't think i am going the right way about actually replacing the specified letters if it's returning a string of symbols, or not actually recognising that a word contains one of the specified letters.

<[ v] contains [thing] ?>

You need to do something like

<[list v] contains (letter (index) of (input)) ?>

deck26 wrote:

laurensmiddy wrote:

my solution so far contains a list of all the characters i wish to replace, and a loop which i am trying to get to ‘search’ the user-input word for any characters that need to be replaced, i have access to the list contains block but i don't think i am going the right way about actually replacing the specified letters if it's returning a string of symbols, or not actually recognising that a word contains one of the specified letters.

<[ v] contains [thing] ?>

You need to do something like

<[list v] contains (letter (index) of (input)) ?>

yeah, that's relatively similar to what i've been using so i'm not really sure where else i'm going wrong. here are my projects using the contains block vs not using it (the without contains block is what i'm trying to solve at the moment:

without `contains` block
with `contains` block

sorry if the solution ends up being something overlooked or massively trivial, i have no one to cast an eye over my work that would understand what i'm trying to do otherwise

cookieclickerer33 wrote:

Well you could do

define (1) contains (2)
For each [counter v] in (length of (1::custom)){
if <(letter (counter) of (1::custom)) = (2::custom)> then
Set [return v] to [true]
Stop [this script v]
Else
Set [return v] to [false]
}::control

That for each block is a hidden block that works like

repeat (length of (1::custom))
change [counter v] by (1)
end

thank you! i don't think i have access to

For each [counter v] in (length of (1::custom)){

here is a link to what i am trying currently, if that gives you a better idea!

laurensmiddy wrote:

deck26 wrote:

laurensmiddy wrote:

my solution so far contains a list of all the characters i wish to replace, and a loop which i am trying to get to ‘search’ the user-input word for any characters that need to be replaced, i have access to the list contains block but i don't think i am going the right way about actually replacing the specified letters if it's returning a string of symbols, or not actually recognising that a word contains one of the specified letters.

<[ v] contains [thing] ?>

You need to do something like

<[list v] contains (letter (index) of (input)) ?>

yeah, that's relatively similar to what i've been using so i'm not really sure where else i'm going wrong. here are my projects using the contains block vs not using it (the without contains block is what i'm trying to solve at the moment:

without `contains` block
with `contains` block

sorry if the solution ends up being something overlooked or massively trivial, i have no one to cast an eye over my work that would understand what i'm trying to do otherwise

Look at how you're using (or not using!) index in the first version! You only ever refer to letter 1 of the input.

laurensmiddy wrote:

cookieclickerer33 wrote:

Well you could do

define (1) contains (2)
For each [counter v] in (length of (1::custom)){
if <(letter (counter) of (1::custom)) = (2::custom)> then
Set [return v] to [true]
Stop [this script v]
Else
Set [return v] to [false]
}::control

That for each block is a hidden block that works like

repeat (length of (1::custom))
change [counter v] by (1)
end

thank you! i don't think i have access to

For each [counter v] in (length of (1::custom)){

here is a link to what i am trying currently, if that gives you a better idea!

It’s basic the same thing as increasing the variable at the start of each loop

deck26 wrote:

laurensmiddy wrote:

deck26 wrote:

laurensmiddy wrote:

my solution so far contains a list of all the characters i wish to replace, and a loop which i am trying to get to ‘search’ the user-input word for any characters that need to be replaced, i have access to the list contains block but i don't think i am going the right way about actually replacing the specified letters if it's returning a string of symbols, or not actually recognising that a word contains one of the specified letters.

<[ v] contains [thing] ?>

You need to do something like

<[list v] contains (letter (index) of (input)) ?>

yeah, that's relatively similar to what i've been using so i'm not really sure where else i'm going wrong. here are my projects using the contains block vs not using it (the without contains block is what i'm trying to solve at the moment:

without `contains` block
with `contains` block

sorry if the solution ends up being something overlooked or massively trivial, i have no one to cast an eye over my work that would understand what i'm trying to do otherwise

Look at how you're using (or not using!) index in the first version! You only ever refer to letter 1 of the input.

i'm afraid i'm not actually sure how to identify where i've made a mistake, i've been working off other scratchers' advice and previous worked examples

update:

i decided to restart from the beginning instead of reworking scripts that already existed (i think this is where most of the confusion came from to be honest), i seem to have things working and running smoothly!

thank you to everyone who helped! sorry if the answer was hidden in plain sight and it was frustrating that i was completely missing it
(disclaimer: i am still jet lagged and sleep deprived so my brain is foggier than usual )

best wishes