jasonrudolph

Programming Achievements: How to Level Up as a Developer

This gist is part of a blog post. Check it out at:

http://jasonrudolph.com/blog/2011/08/09/programming-achievements-how-to-level-up-as-a-developer

gist:1406238

Originally:
https://gist.github.com/7565976a89d5da1511ce

Hi Donald (and Martin),

Thanks for pinging me; it's nice to know Typesafe is keeping tabs on this, and I
appreciate the tone. This is a Yegge-long response, but given that you and
Martin are the two people best-situated to do anything about this, I'd rather
err on the side of giving you too much to think about. I realize I'm being very
critical of something in which you've invested a great deal (both financially

ry

var http = require('http')
var fork = require('child_process').fork;

function fib(n) {
  if (n < 2) {
    return 1;
  } else {
    return fib(n - 2) + fib(n - 1);
  }
}

AndyBowes

class RomanNumeral {
  def toRomanNumerals( number: Int) : String = {
    toRomanNumerals( number, List( ("M", 1000),("CM", 900), ("D", 500), ("CD", 400), ("C", 100), ("XC", 90),
                                   ("L", 50), ("XL",40), ("X", 10), ("IX", 9), ("V", 5), ("IV", 4), ("I", 1) ))
  }

  private def toRomanNumerals( number: Int, digits: List[(String, Int)] ) : String = digits match {
    case Nil => ""
    case h :: t => h._1 * ( number / h._2 ) + toRomanNumerals( number % h._2, t )
  }

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

maciejwalkowiak

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>2.1</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals>
                <goal>shade</goal>
            </goals>

ecmendenhall

(ns primes.core)

(defn trial-division [n divisor factors]
  (if (< n 2)
    factors
    (if (= 0 (mod n divisor))
      (recur (/ n divisor) divisor (conj factors divisor))
      (recur n (inc divisor) factors))))

(defn prime-factors [n]

kristopherjohnson

# Makefile
# 
# Converts Markdown to other formats (HTML, PDF, DOCX, RTF, ODT, EPUB) using Pandoc
# <http://johnmacfarlane.net/pandoc/>
#
# Run "make" (or "make all") to convert to all other formats
#
# Run "make clean" to delete converted files

# Convert all files in this directory that have a .md suffix

Integralist

hash = { 'foo' => 'bar' }

# Version 1
hash = Hash[hash.map { |k, v| [k.to_sym, v] }]

# Version 2
hash = hash.reduce({}) do |memo, (k, v)| 
  memo.tap { |m| m[k.to_sym] = v }
end

ldodds

Twitter informed that a demo of Xanadu had launched, so I went to have a look. The demo only works in Firefox and it seems to be a cut down version of demos that I've seen Ted Nelson give in the past. But still: running code in the wild.

I met Ted Nelson once when we both spoke at an STM Innovations conference in 2006. I suspect he wouldn't have agreed with my much of my talk which looked at the web as a hypertext system and compared it with earlier approaches. My point of view was that we could bring those features back into the web by creating new services and by exploiting Javascript and web browsers to upgrade our experience of using the web. Evolution doesn't need to happen in a coordinated centralised way.

(When I say I met Ted Nelson, I meant that I shyly sat next to him at lunch while he expounded on various topics and fiddled with the tape recorder he was using to record all his conversations. So maybe, "met" isn't the right word (he won't