Re: [racket-users] Racket for Kids in 2017

Stephen De Gabrielle wrote on 05/28/2017 09:08 AM: > But don't discount the potential of throwing a young child at a computer with > only non-child software on it, and let them figure out > how to do what they want, much on their own. That's how the early-1980s > home computer kids got started,

Re: [racket-users] making a language that can return the body of a function

I just noticed that the stepper for intermediate student with lambda pretty much does what I want. I guess I can look into that. On Sunday, May 28, 2017 at 7:55:08 PM UTC-6, Matthias Felleisen wrote: > I misunderstood because of your mismatched parentheses. Without eval, you > can’t do better

Re: [racket-users] using a created language in the repl

I think what happens is that when you use the language with the repl it ignores the reader and just looks at the exports from the language (main.rkt). On Thursday, May 25, 2017 at 10:14:58 AM UTC-6, Dmitry Pavlov wrote: > Vityou, > > > > I will give you an example though I myself

Re: [racket-users] making a language that can return the body of a function

I misunderstood because of your mismatched parentheses. Without eval, you can’t do better than that. Parens rock. > On May 28, 2017, at 9:51 PM, Vityou wrote: > > On Sunday, May 28, 2017 at 2:01:09 PM UTC-6, Matthias Felleisen wrote: >> You need to apply the function, not

Re: [racket-users] making a language that can return the body of a function

On Sunday, May 28, 2017 at 2:01:09 PM UTC-6, Matthias Felleisen wrote: > You need to apply the function, not just compute the substitution. See > applicable struct in previous message. This should just work out, w/o much > ado. > > > > > On May 28, 2017, at 12:40 AM, Vityou

Re: [racket-users] How to pretty print HTML?

> On May 28, 2017, at 7:37 PM, Zelphir Kaltstahl > wrote: > > did not know about `with-output-to-string` - This means I can get any output > of a procedure, which usually prints that right away, into a string, I guess. Makes for really good unit testing for I/O

Re: [racket-users] How to pretty print HTML?

On Sunday, May 28, 2017 at 10:20:10 PM UTC+2, Matthias Felleisen wrote: > I have the impression that you are conflating rendering as an output with > representing as a string. So the following code tries to sketch this: > > (require xml) > > ;; Xexpr -> String > (define (xexpr->xml/pretty x)

Re: [racket-users] Racket for Kids in 2017

Some really good thoughts there. I think key is to have some initial structured content to give him a springboard and then allow him to build out from there. LOL, yes, I agree wrt keeping web programmer (specifically JS) influences away to avoid brain rot! :D Even though my older son

Re: [racket-users] Racket for Kids in 2017

> On May 28, 2017, at 6:24 PM, ylluminate wrote: > > Matthias, thanks for that. So essentially the scripted components are > available in different focuses (e.g., HoC, Algebra, Reactive, Data Science, & > Physics) here: > http://www.wescheme.org/openEditor > >

Re: [racket-users] Racket for Kids in 2017

Matthias, thanks for that. So essentially the scripted components are available in different focuses (e.g., HoC, Algebra, Reactive, Data Science, & Physics) here: http://www.wescheme.org/openEditor Correct? Are these to be used in a stepwise fashion moving from HoC to Algebra to Reactive,

Re: [racket-users] Racket for Kids in 2017

> On May 28, 2017, at 1:23 AM, ylluminate wrote: > > I have a older teen who's been programming for the last several years and is > remarkably talented. His younger brother is now wanting to get going (10). > > My older son started with JS, learned how to hate it, and

Re: [racket-users] How to pretty print HTML?

I have the impression that you are conflating rendering as an output with representing as a string. So the following code tries to sketch this: (require xml) ;; Xexpr -> String (define (xexpr->xml/pretty x) (with-output-to-string (lambda () (display-xml/content (xexpr->xml

Re: [racket-users] Question: 2D data (Arrays?) in Universe Teachpack

> On May 27, 2017, at 10:00 AM, A Mauer-Oats wrote: > > This time we used math/array, but arrays are basically mutable in nature and > that doesn't seem to work very well with way the universe is set up. My > students ended up writing a lot of code like (begin (array-set!

Re: [racket-users] making a language that can return the body of a function

You need to apply the function, not just compute the substitution. See applicable struct in previous message. This should just work out, w/o much ado. > On May 28, 2017, at 12:40 AM, Vityou wrote: > > On Thursday, May 25, 2017 at 5:50:29 PM UTC-6, Matthias Felleisen