hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

retronym

class A
class A2 extends A
class B

trait M[X]

//
// Upper Type Bound
//
def upperTypeBound[AA <: A](x: AA): A = x

buzzdecafe

CATEGORY THEORY FOR PROGRAMMERS

Category Theory 1.1: Motivation and Philosophy 
https://www.youtube.com/watch?v=I8LbkfSSR58&index=1&list=PLbgaMIhjbmEnaH_LTkxLI7FMa2HsnawM_

Composability, Abstraction, Reusability

Category Theory is a higher-level language.
Not a practical, executable language.

dcsobral

Pull request #8373 implementing issue 333 (but please note differences).

Pull request description follows:

This PR adds a -Wconf compiler flag that allows filtering and configuring compiler warnings (silence them, or turn them into errors).

It also integrates the fantastic silencer compiler plugin by @ghik into the compiler, which allows suppressing warnings locally using the @nowarn annotation.

StompyNZ

  <!-- ADMIN ITEMS -->
  <item id="3500" name="Admin_nailgun">
    <property name="IsDeveloper" value="true"/>
    <property name="Meshfile" value="Items/Tools/nailgunPrefab"/>
    <property name="CustomIcon" value="nailgun"/>
    <property name="CustomIconTint" value="FF0000"/>
    <property name="Material" value="metal"/>
    <property name="HoldType" value="37"/>
    <property name="Stacknumber" value="1"/>
    <property name="RepairTools" value="repairKit"/>

aloiscochard

#!/usr/bin/env bash

############
# QuickSBT #
############

# Launch SBT with support for generating /tmp/sbt.quickfix file for Vim
# http://github.com/aloiscochard / https://gist.github.com/4698501

# Error format for SBT, and shortcut to open SBT quickfix file :

jboner

{
    "cmd": ["sbt-no-color compile"],
    "file_regex": "^\\[error\\] ([.a-zA-Z0-9/-]+[.]scala):([0-9]+):",
    "selector": "source.scala",
    "working_dir": "${project_path:${folder}}",
    "shell": "true"
}

ymasory

Please help compile a list of all Scala-related IRC rooms.

All of these channels are on Freenode.

#akka              | concurrency & distribution framework
#argonaut          | json library
#fp-in-scala       | the book Functional Programming in Scala
#geotrellis        | geoprocessing library
#indyscala         | regional scala group
#json4s            | json library

poetix

package com.youdevise.lofty

import org.specs2.mutable._
import scala.language.dynamics
import scala.language.reflectiveCalls
import scalaz._
import Scalaz._
import scala.reflect.runtime.universe._

trait Builder[T] {

paulp

/** Constructing "singleton types" from compile-time literals
  *
  * val x = Example.foo(42)
  * val y: x.T = 42 // compiles
  * val z: x.T = 43 // doesn't
  *
  */
package s

import scala.language.experimental.macros