lazywithclass

[RC Diary] Interpreter and interviews(-36)

Interpreter

Thanks to Racket I am getting even more understanding of how the interpreter works under the covers, especially (require racket/trace) is helping a lot, I can verify my assumptions with a quick run. This is basically what I wanted to do when I tried to translate the interpreter into Clojure, but couldn't because of my limited understanding of how to implement a patter match for lambdas.

Interviews

lazywithclass

#!/usr/bin/racket
#lang racket

;; https://www.cs.indiana.edu/cgi-pub/c311/lib/exe/fetch.php?media=pmatch.scm
;; pmatch included here ******************
(define-syntax pmatch
  (syntax-rules ()
    ((_ v c ...) (pmatch-who #f v c ...))))

(define-syntax pmatch-who

lazywithclass

[RC Diary] Interpreter (-37)

I am studying an interpreter written in Scheme and meanwhile writing a blog post about the experience.

lazywithclass

Looking at the most beautiful program ever written - part 1

I am going to have a look at what William Byrd presented as The most beautiful program ever written.

Beauty here refers to computer programs, specifically about Lisp. There might be errors as this is something I wrote to make sense of that interpreter, proceed at your own risk.

Thanks a lot to Carl J. Factora for the help.

The program

lazywithclass

[RC Diary] Interviews, mock interviews, more mock interviews, and Dota (-39)

Real and fake. The more I attend interviews the more I realise how useless they are: sometimes it just feels like you have an hour with your interviewer and you have to fill it somehow with professional questions.

I am really getting lazy with these diary posts recently. Damn.

lazywithclass

[RC Diary] The most beautiful program ever written, and speed reading app (-40)

The most beautiful program ever written

A few weeks ago I went to this meetup where William Byrd presented an interpreter for Scheme in a few lines. It was a fascinating talk where he spoke about this:

![scheme interpreter](https://lh3.googleusercontent.com/hjc6HnmF0vQFcHwhPpK0O1awP2ymF9HZ8hh8hrZALlb9A2O9I0h8jue45I6mjDXopUCVZ4B3AYcWHPKcSisYX1CLHOtQj7CJDmTRY-dbVL_-OS6xzUDHZmLiBbHC3fQeHNfKeo5tQu1tl6t7I0mD0ZxE1xmVQsunFGofosUpAKwPSxTq7naJ05RCpo6jS27XCb066VtyDUfWJ6eDX8gotg-20_XHZxj7JVyI6JWeamqioFNVck3OgWB0tuGRa27n7gb4xBcJmlddxU7euSyhWFPhCUdflbB0GM9BL-tEOEPw4jdb93eRX04dcLlKRLOV5tzRPovk-VItI8V-mfKttTyw2wqcQvVl0LrefzS_OZ4Rq99IzZSxBWUg_aQJmJAeiqXiV7Mwr6SLQw-HACAiCoWE9FzBfQ3rH5YpP_9j-BOL5vzBhiGfd8UEXump-nOcy9ebPT-_vkC2ZP0q_hhOm2B498xa-rUe7U94E-VzqKUiHZc8gOpPriRGRD9hxute11Nr5pVOt83N7307GnfuQTZp5OGrPnjIZWVhc1TBvdIaxtbKLLnjl6SigigEQZLvCyT4wx4U29H6sycdbbb

lazywithclass

[RC Diary] Interview exercise (-42)

I find that being at a whiteboard completely changes my approach to the problem:

• at the laptop I am like, yeh ok let's code this thing with the first thing that comes into my mind
• at the whiteboard I am all like, uuhhhmmmmm, let's try this approach carefully and see what happens

I've spent most of the day going through this exercise, or better, through this last edge case of this exercise. Basically hackerrank.com runs your code against a set of tests, but it just tells you when you fail a test, without giving either inputs or outputs.

lazywithclass

[RC Diary] Jobs hunt, climbing the Scala, and speed reading app (-43)

I'm getting close to my mental limit I think, I have less and less energy as time approaches the end of my batch.

lazywithclass

[RC Diary] Scala (-44)

Scala

Going through Functional Programming in Scala, exercises and notes are here.

lazywithclass

[RC Diary] Scala (-45)

Scala

Going through Functional Programming in Scala, exercises and notes are here.