Is Letter, Number, or Symbol Block

fyromaniac1

Ever had a project that had to use only numbers/letters/symbols? You might have to do something like this:

Well, a good suggestion would be to have a block that detects if the string is a number, symbol, or letter, Like this!

Here is an example of the new block in action:

So basically, It is a Reporter block that would most likely be in the |Sensing| Section of the Block Palette.
If you say:

then it will come out saying “True”.

This is my Idea, and please follow this Topic, and support!

Last edited by fyromaniac1 (Nov. 16, 2013 01:20:46)

ppettitt

Support!

turkey3_test

You can have each symbol in a list (I.e. Numbers) and check of the list contains the symbol, so I don't support.

fyromaniac1

turkey3 wrote:
You can have each symbol in a list (I.e. Numbers) and check of the list contains the symbol, so I don't support.

Well, the list can't have every number/symbol because first of all, there are TONS of symbols and an infinite number of numbers, so that list would be pretty long.

ProdigyZeta7

turkey3_test wrote:
You can have each symbol in a list (I.e. Numbers) and check of the list contains the symbol, so I don't support.

Yeah, but think about all the letters with diacritics…

I'm supporting because I hate using alt + #### to make symbols in lists to detect the type of string.

mobluse

This is already possible:

This solution comes from http://wiki.scratch.mit.edu/wiki/String#String_or_Number.3F
But I used De Morgan's laws to change it from “isString” to “isNumber”.

It would be better if procedures could return a value, i.e. one should have functions. To have a lot of new boolean functions would clutter the GUI for beginners – especially when this could be solved by a general solution (i.e. functions).

No support!

Rumanti

mobluse wrote:
This is already possible:
No support!

+1 Awesome. But what he suggests is pretty handy, and simple. New Scratchers could use it pretty quickly. So I support him too. +1

1234abcdcba4321

But you can already DO it!
(nah, why not.)

As a workaround for numbers, you could do

cobraguy

Even after looking at the workarounds, I support! It would be faster than using the workarounds.

EDIT: Hold on, what would a mixture of number, letters, and symbols count as?

Last edited by cobraguy (Nov. 18, 2013 00:09:57)

fyromaniac1

Everything: !@#$%^&*()-=_+`~,./<>?;':"\{}| (Including Alt codes such as Alt 1)
Letters: ABCDEFGHIJKLMNOPQRSTUVUXYZ
Numbers 12345678910121314151617181920 etc. etc. etc.

ProdigyZeta7

cobraguy wrote:
Hold on, what would a mixture of number, letters, and symbols count as?

A string, duh.

AonymousGuy

I support, although I can't think right now of a place I would need to use it…

Maybe in an input situation that required a number (such as a shop in an RPG game where you specify the amount of items)

cobraguy

ProdigyZeta7 wrote:
cobraguy wrote:
Hold on, what would a mixture of number, letters, and symbols count as?
A string, duh.

EDIT: Nevermind, I figured out how any problems could be fixed.

Last edited by cobraguy (Nov. 18, 2013 14:27:44)

liam48D

This is great! But, I can't remember the last time ST added a real block, since 2.0.

+1 Support!

jTron

For the most part, I support. Other types of characters (or even word, etc.) could be added.
Also, a better workaround - put the options in a list and use the <[… v] contains [thing]> block.
Edit: already mentioned, never mind :)

Lastly, a protip: use

([] is [number v] :: operators)

to change the type of block:

Last edited by jTron (March 10, 2014 18:22:50)

educationiskey

I totally agree. I have used workarounds, but this would be better. (Before I saw some of the scripts here, I was doing If Answer = 1 or Answer = 2 etc.

)

stickfiregames

I definitely support a block for testing numbers (even though there is a workaround).

The problem with the letter one is you get into technicalities about what is and isn't a letter. For example:

Of course, you could have “is a Latin letter” but that wouldn't be so useful in other languages.

Same for the symbol one, since it is basically “anything that is not a letter or number”.

robosnakejr

Support

CodingJam

This doesn't work

Last edited by CodingJam (Dec. 28, 2022 09:43:19)

Griffenlover

CodingJam wrote:
You could make a sprite with loads of costumes all named:
Other
as the first costume
al
bl
cl
dl
for all the letters
:s
's
#s
,s
for all the symbols.
Then you could make a block called letter, number, or symbol which looks like:

please dont necropost, the last post was 2 years ago

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