Snap! user discussion

bharvey

MichaelIsSoAnnoying wrote:
I'm working on a hangman project, and I would like to generate random words from a java script dictionary. Is there any way I could do this?

If you have the dictionary in a list, just use

(item (random v) of [list v] :: list)

Nice username, by the way.

theLman

Phew… Just finished making my first project in SNAP! The first session or two was surprisingly difficult even though I've done a lot of Scratch. There are a few little idiosyncrasies with how to achieve certain things that differ from Scratch, such as making a list by putting an empty list block in a variable etc. But once I got used to the small differences it was a such a pleasure to be able to make custom blocks and reporters etc. The project is definitely not the most elegant code and I have hardly scratched the surface of what's possible so I'll keep learning as I go. The power of the language in terms of features is amazing.

For anyone interested, the project is a tool to use in one of my year 6 classes for some code breaking activities. It's not really meant to be used outside the classroom. It may make a little more sense with this. Or just copy and paste this text in: 5305830583370553 1085 83235342 235858 100205 8323100221 38855342. 63 210285075870 55631305 05235002 21100770059710 92055385 850710 8577 859705 02079770530570! 370710 63 38635858 3705 97635005… 778553 978538. 63 708597'10 38239710 1085 37588538 8374 5085130553.

Last edited by theLman (Dec. 25, 2017 19:06:09)

bharvey

theLman wrote:
a tool to use in one of my year 6 classes for some code breaking activities.

Great minds think alike:

https://people.eecs.berkeley.edu/~bh/v2ch11/crypto.html

theLman

bharvey wrote:
theLman wrote:
a tool to use in one of my year 6 classes for some code breaking activities.
Great minds think alike:

https://people.eecs.berkeley.edu/~bh/v2ch11/crypto.html

Wow! What a fascinating read. I love how you started with letter frequency. Thank you for sharing.

logofoundation

Is there a Spanish version of Snap! ?

PullJosh

logofoundation wrote:
Is there a Spanish version of Snap! ?

Yes:

Convert your Scratch projects to JavaScript automatically with Leopard!

logofoundation

never mind…found the Spanish…

Ize

Hey, this is pretty cool! It feels a lot smoother. And things can go off the screen! YES!

theLman

Ize wrote:
Hey, this is pretty cool! It feels a lot smoother. And things can go off the screen! YES!

And you can make the stage bigger

bharvey

theLman wrote:
Ize wrote:
Hey, this is pretty cool! It feels a lot smoother. And things can go off the screen! YES!
And you can make the stage bigger

… and use higher order functions …

chris_francis

The end of “Exploring tables with Snap!” under Codification says:
For “bigger” data sets a more promising strategy might be to store them in a server-hosted data base and to use Snap as a client. Snap’s codification feature can be leveraged to transcompile blocks into SQL queries that can be sent to the server hosting the (possibly remote) data base using Snap’s
HTTP block.

I'd like to be able to load a CSV file to a Google Fusion Table (outside of Snap!) and then pull that data into a list in Snap! Is this type of functionality available with a Fusion Table or other database? Could someone post an example of how to pull data from an external database into a Snap! list?
Thanks, Chris

xly

Happy new Year !
Go Neuronal with :
https://snap.berkeley.edu/snapsource/snap.html#present:Username=xleroy&ProjectName=00-deepv3

bharvey

xly wrote:
Happy new Year !
Go Neuronal with :
https://snap.berkeley.edu/snapsource/snap.html#present:Username=xleroy&ProjectName=00-deepv3

Umm, okay, it changes a lot of variables… When I connect the WHEN FLAG block in the second sprite with the script under it, that sprite starts bouncing around. The first sprite has different colored costumes but doesn't seem to do anything with them… So I'm having trouble working out what this is for!

theLman

bharvey wrote:
theLman wrote:
Ize wrote:
Hey, this is pretty cool! It feels a lot smoother. And things can go off the screen! YES!
And you can make the stage bigger
… and use higher order functions …

Haha yeah sorry Brian… that is much more important. However, sometimes we just get excited about the shiny paint on the turbocharged car.

xly

bharvey wrote:
xly wrote:
Happy new Year !
Go Neuronal with :
https://snap.berkeley.edu/snapsource/snap.html#present:Username=xleroy&ProjectName=00-deepv3
Umm, okay, it changes a lot of variables… When I connect the WHEN FLAG block in the second sprite with the script under it, that sprite starts bouncing around. The first sprite has different colored costumes but doesn't seem to do anything with them… So I'm having trouble working out what this is for!

For the theoretical basis of my project see Project notes.
All programming examples of NN of the literature are based either on Python, Java or JS.
I just wanted to check that Snap! is well adapted for this type of exercize which uses extensively vectors and matrices

bharvey

xly wrote:
For the theoretical basis of my project see Project notes.

Ah! Thanks.

xly

bharvey wrote:
xly wrote:
Happy new Year !
Go Neuronal with :
https://snap.berkeley.edu/snapsource/snap.html#present:Username=xleroy&ProjectName=00-deepv3
Umm, okay, it changes a lot of variables… When I connect the WHEN FLAG block in the second sprite with the script under it, that sprite starts bouncing around. The first sprite has different colored costumes but doesn't seem to do anything with them… So I'm having trouble working out what this is for!

I had used clones to draw network nodes (in green).
But I forgot that when closing a project…clones are killed and thus no more network !

bharvey

xly wrote:
But I forgot that when closing a project…clones are killed and thus no more network !

Ah, great! Tell Jens that you really want to be able to generate clones programmatically and have them be permanent. (If you make clones by clicking on menus, they are permanent!)

xly

bharvey wrote:
xly wrote:
But I forgot that when closing a project…clones are killed and thus no more network !
Ah, great! Tell Jens that you really want to be able to generate clones programmatically and have them be permanent. (If you make clones by clicking on menus, they are permanent!)

One can create a clone inside the sprite corral.
But, then, the issue is that when you want to change the clone properties by adding a new feature then you need to change scripts for each of them.
There is a turnaround : to keep in a list the clone positions as to reinstall them at the same place when restarting.

Last edited by xly (Jan. 9, 2018 14:47:39)

bharvey

xly wrote:
One can create a clone inside the sprite corral.
But, then, the issue is that when you want to change the clone properties by adding a new feature then you need to change scripts for each of them.

No, you don't have to do that, as long as you don't put any scripts in the clones. They will inherit the entire scripting area from their parent.

Sadly, inheriting scripts is all-or-nothing. So if you drag a block into the scripting area of a child, it no longer inherits from the parent. (You can control whether the child inherits by right-clicking on the background of its scripting area.)

Jens, what about letting children inherit scripts from their parent and also have their own? Maybe ghost the inherited scripts (I think that's a good idea anyway). It would be the user's responsibility to worry about not overlapping the area used by parent scripts.

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