Discuss Scratch

#1May 21, 2019 22:57:04
destroyer489
Scratcher
28 posts

Add a For loop

so I use Python, C++, and Java a lot and have the great functionality of the for-loop. this is a loop that repeats a certain number of times while having an index this is especially useful for lists and tuples. more documentation can be found here. this type of loop is incredibly useful and would be a fantastic addition to the scratch library
#2May 21, 2019 23:21:11
-Accio-
Scratcher
1000+ posts

Add a For loop

This has been suggested so many times that I can't even find an oldest duplicate.
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#3May 22, 2019 00:27:27
colinmacc
Scratcher
1000+ posts

Add a For loop

set [index v] to [0]
repeat (10)
change [index v] by (1)
Do things...
end
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#4May 22, 2019 01:57:18
ResExsention
New to Scratch
1000+ posts

Add a For loop

colinmacc wrote:

set [index v] to [0]
repeat (10)
change [index v] by (1)
Do things...
end

Uh, close, but not quite.

set [index v] to [0]
set [target v] to [whatever, even another variable]
repeat (target)
change [index v] by (1)
...
end

Semi-support though. For loops are actually quite useful.

Last edited by ResExsention (May 22, 2019 01:57:50)

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#5Nov. 8, 2019 21:11:20
groko13
Scratcher
100+ posts

Add a For loop

ResExsention wrote:

colinmacc wrote:

set [index v] to [0]
repeat (10)
change [index v] by (1)
Do things...
end

Uh, close, but not quite.

set [index v] to [0]
set [target v] to [whatever, even another variable]
repeat (target)
change [index v] by (1)
...
end

Semi-support though. For loops are actually quite useful.

Actually:

set [index v] to [some #]
repeat until <(index) = [some #]>
do stuff
change [index v] by some #
end

While this is a suitable workaround, I would much prefer (and fully support the addition of) for loops because they make the code neater and use a temporary variable rather than requiring a separate variable.
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#6Nov. 9, 2019 00:36:11
MiniCoder11
Scratcher
100+ posts

Add a For loop

Scratch actually already comes with a built in “for loop”. It just isn't accessible through the main editor panel. To get your hands on this incredibly useful block, just backpack it from this project: https://scratch.mit.edu/projects/343427953/.

I hope that helped!
Please let me know if there is anything else I can do to help
#7Nov. 9, 2019 15:28:17
Nambaseking01
Scratcher
1000+ posts

Add a For loop

Unfortunately, this seems to be a duplicate topic!

Here are all of the duplicates I found sorted from oldest to newest:

https://scratch.mit.edu/discuss/topic/11712/ (July 24, 2013)
https://scratch.mit.edu/discuss/topic/19763/ (November 7, 2013)
https://scratch.mit.edu/discuss/topic/44424/ (July 3, 2014)
https://scratch.mit.edu/discuss/topic/46758/ (July 23, 2014)
https://scratch.mit.edu/discuss/topic/81652/ (January 16, 2015)
https://scratch.mit.edu/discuss/topic/104164/ (April 3, 2015)
https://scratch.mit.edu/discuss/topic/204415/ (June 16, 2016)
https://scratch.mit.edu/discuss/topic/275054/ (August 30, 2017)
https://scratch.mit.edu/discuss/topic/305375/ (June 30, 2018)
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#8Nov. 9, 2019 17:06:45
Harakou
Scratcher
1000+ posts

Add a For loop

Nambaseking01 wrote:

Unfortunately, this seems to be a duplicate topic!

Here are all of the duplicates I found sorted from oldest to newest:

https://scratch.mit.edu/discuss/topic/11712/ (July 24, 2013)
https://scratch.mit.edu/discuss/topic/19763/ (November 7, 2013)
https://scratch.mit.edu/discuss/topic/44424/ (July 3, 2014)
https://scratch.mit.edu/discuss/topic/46758/ (July 23, 2014)
https://scratch.mit.edu/discuss/topic/81652/ (January 16, 2015)
https://scratch.mit.edu/discuss/topic/104164/ (April 3, 2015)
https://scratch.mit.edu/discuss/topic/204415/ (June 16, 2016)
https://scratch.mit.edu/discuss/topic/275054/ (August 30, 2017)
https://scratch.mit.edu/discuss/topic/305375/ (June 30, 2018)
Yeah, there are uh, a lot of these. It's a pretty common and useful construct. I'm not quite sure why we don't have one, though I presume the idea has been floated at some point. Most likely, since it's a convenience factor, I think it was probably deemed not entirely necessary.

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