Show HN: Clojure by Example • Hacker News Board

Re: Show HN: Clojure by Example

#11

Post by hoprocker » Thu, Jun 11, 2015, 12:14 AM UTC

Lovely. A nice addition would be a floating REPL to try things out as you go along, maybe at the bottom of the screen with a dash of transparency.

(I know I know, there are plenty of other ways to access a Clojure REPL!)

Re: Show HN: Clojure by Example

#12

Post by lewisl9029 » Thu, Jun 11, 2015, 1:03 AM UTC

For those who prefer learning in a more passive manner, I've found these sets of screencasts on the Clojure Koans quite useful too.

http://www.clojurescreencasts.com/koans-walkthrough/01.html

Re: Show HN: Clojure by Example

#13

Post by melipone » Thu, Jun 11, 2015, 1:38 AM UTC

Remind me of the little schemer. How about a "The little clojurist" book?

Re: Show HN: Clojure by Example

#14

Post by fierycatnet » Thu, Jun 11, 2015, 1:44 AM UTC

jonnybgood wrote: post #5

Would be awesome if interactive like the interactive SICP[0] [0] http://xuanji.appspot.com/isicp

Woah. I've been wanting to finish SICP book along with MIT lectures and this site looks like another great addition. This gives me a boost in motivation to finish the book.

If someone ever comes up for something like this for Clojure then it would be incredibly awesome.

Re: Show HN: Clojure by Example

#15

Post by mayneack » Thu, Jun 11, 2015, 4:05 AM UTC

This is super helpful. Reminds me of bropages: http://bropages.org/

Re: Show HN: Clojure by Example

#16

Post by pvdebbe » Thu, Jun 11, 2015, 4:34 AM UTC

Great execution, but the indentation is wonky at times, making it difficult to see the idea.

Re: Show HN: Clojure by Example

#17

Post by dvliman » Thu, Jun 11, 2015, 5:14 AM UTC

this is exactly how intro to programming language should be (for people who already know other languages)

Re: Show HN: Clojure by Example

#18

Post by elangoc » Thu, Jun 11, 2015, 6:23 AM UTC

I love it!

The target audience is people with prior programming experience. It's important to know the target audience, either as a writer or reviewer.

The tutorial webpage is simple and effective with a gradual progression in concept difficulty.

I hope we have more things like this! Thanks!

Re: Show HN: Clojure by Example

#19

Post by elangoc » Thu, Jun 11, 2015, 6:32 AM UTC

jonnybgood wrote: post #5

Would be awesome if interactive like the interactive SICP[0] [0] http://xuanji.appspot.com/isicp

Whoa! ISICP looks really cool! You know, the exercise sections of ISICP remind me a lot of the interactive Clojure exercises at 4Clojure.com. 4Clojure.com has a link to the github repo of the software used to create the site.

Re: Show HN: Clojure by Example

#20

Post by fnordsensei » Thu, Jun 11, 2015, 9:13 AM UTC

nerd_stuff wrote: post #10

This is a great project! I believe there's a lack of clarity in the let form explanation: =>(let [object "light"] => (let [object "darkness"]) => (println (str "God said let there be " object))) God said let there be light nil 'object' is overwritten but only within the second let form: =>(let [object "light"] => (let [object "darkness"] => (println (str "God said let there be " object)))) God said let there be darkn…

This would be better for illustrating that object is not overweritten, I think:

  =>(let [object "light"]
  =>  (let [object "darkness"]
  =>    (println (str "God said let there be " object)))
  =>  (println (str "God said let there be " object)))
  God said let there be darkness
  God said let there be light
  nil