bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

kachayev

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

By @kachayev

Intro

jackrusher

(def parent {:x1 0 :y1 0 :x2 600 :y2 400})
(def rs [{:x1 0 :y1 0   :x2 300 :y2 200 }
         {:x1 0 :y1 200 :x2 300 :y2 400 }])

(defn negative-space [parent rs]
  (let [x (apply max (map :x2 rs))
        y (apply min (map :y1 (filter (comp (partial = x) :x2) rs)))]
    {:x1 x :y1 y :x2 (parent :x2) :y2 (parent :y2)}))

(negative-space parent rs)

bitemyapp

The Learning Haskell guide has been moved to a git repo to enable outside contribution

Find it here: https://github.com/bitemyapp/learnhaskell

steeve

How to cross compile Go with CGO programs for a different OS/Arch

It is possible to compile Go programs for a different OS, even though go build says otherwise.

You'll need:

• a valid toolchain for the platform/os you're targetting
• Go Tip (works on 1.1 and 1.2rc1 but you might as well be on tip)
• golang-crosscompile helper script https://github.com/davecheney/golang-crosscompile
• the patch provided

danneu

My efforts to port http://www.youtube.com/watch?v=f6kdp27TYZs to Clojure.

A boring function (6:22)

func boring(msg string) {
  for i := 0; ; i++ {
    fmt.Println(msg, i)
    time.Sleep(time.Second)
 }

jackrusher

Hofstadter on Lisp

In the mid-80s, while reading through my roommate's collection of Scientific American back issues, I encountered this introduction to Lisp written by Douglas Hofstadter. I found it very charming at the time, and provide it here (somewhat illegally) for the edification of a new generation of Lispers.

In a testament to the timelessness of Lisp, you can still run all the examples below in emacs if you install these aliases:

(defalias 'plus #'+)
(defalias 'quotient #'/)
(defalias 'times #'*)
(defalias 'difference #'-)

freeformz

A slightly updated version of this doc is here on my website.

Why I Like Go

I visited with PagerDuty yesterday for a little Friday beer and pizza. While there I got started talking about Go. I was asked by Alex, their CEO, why I liked it. Several other people have asked me the same question recently, so I figured it was worth posting.

Goroutines

The first 1/2 of Go's concurrency story. Lightweight, concurrent function execution. You can spawn tons of these if needed and the Go runtime multiplexes them onto the configured number of CPUs/Threads as needed. They start with a super small stack that can grow (and shrink) via dynamic allocation (and freeing). They are as simple as go f(x), where f() is a function.

cqfd

i'm doing a bittorrent client in erlang

task: parse a lump of raw binary data from a socket into a list of bittorrent messages

my original implementation worked but was messy; the logic for parsing individual bittorrent messages was tangled with the logic for accumulating them into a list [should show this, ought to be somewhere in github.com/happy4crazy/ebc]

tenderlove

###
# Scheme code is translated to YARV byte code, then evaluated in the
# Ruby Virtual Machine

require 'rbconfig'
require 'dl'
require 'fiddle'
require 'strscan'

class RubyVM