Scratch

Unknown164 · 2013-04-09 22:26:06

We need to have blocks that create/delete variables as part of the script.

when  clicked
create variable Blah
set Blah ▼
 to 1
delete variable Blah

Like this.

You wouldn't have to have the clutter of a bunch of variables, just a few at a time that are deleted when they are not needed, and created when they are.

Last edited by Unknown164 (2013-04-09 22:27:30)

kayybee · 2013-04-09 22:53:05

Unknown164 wrote:
We need to have blocks that create/delete variables as part of the script.
when  clicked
create variable Blah
set Blah ▼
 to 1
delete variable Blah
Like this.

You wouldn't have to have the clutter of a bunch of variables, just a few at a time that are deleted when they are not needed, and created when they are.

I think this way is better because that is how variables function in most programming languages.

ProgrammingPro01 · 2013-04-09 22:57:12

I do not think this is pretty unnecessary, as you don't really have any reason to have to delete a variable. Or, at least I haven't needed to. But if you for some reason of had to, there is a work-around for it. Just set the variable to something that won't affect the project. Like "[not used]" or something.

I don't know, I don't know if you have my support or not, yet. Could you tell me how you think this would be useful, because I just can't think of any times this would actually be useful rather than just organization. hmm

Hyperbola · 2013-04-10 16:40:00

A script variable instead would be good too. Not displayed as a variable, but able to store numbers like one.

Or maybe just an easier way to make a for loop. That'll help a lot.

Re: Useful
Looping.

kayybee · 2013-04-10 23:25:32

I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind

mythbusteranimator · 2013-04-11 08:53:35

kayybee wrote:
I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind

So?
What's wrong with script variables, like BYOB does?

veggieman001 · 2013-04-11 10:02:17

i would really like this

LS97 · 2013-04-11 10:18:14

kayybee wrote:
I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind

It would work if they were typed into a block like this

variable

Anyway, the problem isn't to have to delete any variables, it's creating them when you want to store something in them. Of course that's what lists are for so I find this totally unnecessary.

shadowmouse · 2013-04-11 16:20:55

LS97 wrote:
kayybee wrote:
I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind
It would work if they were typed into a block like this
variable
Anyway, the problem isn't to have to delete any variables, it's creating them when you want to store something in them. Of course that's what lists are for so I find this totally unnecessary.

But lists make code less understandable and tidy, and longer. Using item 1 of list: things, item 2 of list: things e.t.c. is less easily understandable than named variables such as x vel, y vel, score... I think something like temp variables that are declared at the start of a script like in squeak or script variables like in byob are much better than the current system.

kayybee · 2013-04-11 18:43:14

mythbusteranimator wrote:
kayybee wrote:
I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind
So?
What's wrong with script variables, like BYOB does?

No I meant completely removing manually created variables.

mythbusteranimator · 2013-04-11 21:43:28

kayybee wrote:
mythbusteranimator wrote:
kayybee wrote:
I think Scratch shouldn't have variables made manually.

It'd match JS, python, and most of those other languages to create variables in script.
(var count = 3 or whatever)

Oh wait. But then I forgot that Scratch is drag-and-drop and that won't work out never mind
So?
What's wrong with script variables, like BYOB does?
No I meant completely removing manually created variables.

You can't delete variables in PHP or JS

GeonoTRON2000 · 2013-04-11 22:27:24

mythbusteranimator wrote:
kayybee wrote:
mythbusteranimator wrote:

So?
What's wrong with script variables, like BYOB does?
No I meant completely removing manually created variables.
You can't delete variables in PHP or JS

PHP:

Code:

unset($var);

JS:

Code:

delete variable;

mythbusteranimator · 2013-04-11 23:15:19

Ah, I remember the PHP code now.

But not JS. tongue

joshuaho · 2013-04-12 12:39:01

Unknown164 wrote:
We need to have blocks that create/delete variables as part of the script.
when  clicked
create variable Blah
set Blah ▼
 to 1
delete variable Blah
Like this.

You wouldn't have to have the clutter of a bunch of variables, just a few at a time that are deleted when they are not needed, and created when they are.

Great idea! smile

Last edited by joshuaho (2013-04-12 12:40:03)

topazdragonlord · 2013-04-12 12:54:51

You could use lists for this though. Good Idea anyway.
and here are some improved versions of the main variables you did.


create variable variable ▼
delete variable variable ▼
when variable variable ▼
 created
when variable variable ▼
 deleted
if variable variable ▼
 is created
if variable variable ▼
 is deleted

Last edited by topazdragonlord (2013-04-12 12:55:39)

Scratch12300 · 2013-05-01 12:02:51

Hey, I once made a variable caled "Blah"!!

roijac · 2013-05-01 13:47:28

While local script variables à-la BYOB are a good idea, typing variable names in scratch is going to open a new dimension of errors about typos, variables that are not created yet and new scratchers wondering why they cannot access not-yet-initialized variables anymore.

Scratch

archived forums

#1 2013-04-09 22:26:06

Blocks that Create/Delete Variables

#2 2013-04-09 22:53:05

Re: Blocks that Create/Delete Variables

Unknown164 wrote:

#3 2013-04-09 22:57:12

Re: Blocks that Create/Delete Variables

#4 2013-04-10 16:40:00

Re: Blocks that Create/Delete Variables

#5 2013-04-10 23:25:32

Re: Blocks that Create/Delete Variables

#6 2013-04-11 08:53:35

Re: Blocks that Create/Delete Variables

kayybee wrote:

#7 2013-04-11 10:02:17

Re: Blocks that Create/Delete Variables

#8 2013-04-11 10:18:14

Re: Blocks that Create/Delete Variables

kayybee wrote:

#9 2013-04-11 16:20:55

Re: Blocks that Create/Delete Variables

LS97 wrote:

kayybee wrote:

#10 2013-04-11 18:43:14

Re: Blocks that Create/Delete Variables

mythbusteranimator wrote:

kayybee wrote:

#11 2013-04-11 21:43:28

Re: Blocks that Create/Delete Variables

kayybee wrote:

mythbusteranimator wrote:

kayybee wrote:

#12 2013-04-11 22:27:24

Re: Blocks that Create/Delete Variables

mythbusteranimator wrote:

kayybee wrote:

mythbusteranimator wrote:

Code:

Code:

#13 2013-04-11 23:15:19

Re: Blocks that Create/Delete Variables

#14 2013-04-12 12:39:01

Re: Blocks that Create/Delete Variables

Unknown164 wrote:

#15 2013-04-12 12:54:51

Re: Blocks that Create/Delete Variables

#16 2013-05-01 12:02:51

Re: Blocks that Create/Delete Variables

#17 2013-05-01 13:47:28

Re: Blocks that Create/Delete Variables

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