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class Outer {
class Inner
type Type
}
trait Trait
object Object extends Outer {
val inner = new Inner
}
class OuterP[A] {
class InnerP[B]
@etorreborre
etorreborre / gist:5078824
Last active November 16, 2024 17:40
A good summary of Scala types from http://bit.ly/XjSVKw
class Outer {
class Inner
type Type
}
trait Trait
object Object extends Outer {
val inner = new Inner
}
class OuterP[A] {
class InnerP[B]
@mislav
mislav / procs-vs-lambda.md
Last active March 26, 2021 18:34
Jim Weirich on the differences between procs and lambdas in Ruby

Jim Weirich:

This is how I explain it… Ruby has Procs and Lambdas. Procs are created with Proc.new { }, lambdas are created with lambda {} and ->() {}.

In Ruby 1.8, proc {} creates lambda, and Ruby 1.9 it creates procs (don't ask).

Lambdas use method semantics when handling parameters, procs use assignment semantics when handling parameters.

This means lambdas, like methods, will raise an ArgumentError when called with fewer arguments than they were defined with. Procs will simply assign nil to variables for arguments that were not passed in.

@ymasory
ymasory / scala-irc
Last active August 30, 2017 21:16
List of all Scala-related IRC channels.
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
@coldnebo
coldnebo / rails_trace.rb
Last active August 15, 2024 15:15
This Rack middleware for Rails3 lets you see a call-trace of the lines of ruby code in your application invoked during a single request. Only code within your app is considered (i.e. in the /app folder). This expands on my previous attempt (https://gist.github.com/3077744). Example of output in comments below.
require 'singleton'
# outputs a colored call-trace graph to the Rails logger of the lines of ruby code
# invoked during a single request.
#
# Example:
#
# 1) Make sure this file is loaded in an initializer
#
# 2) Add the following to your application.rb in Rails3:
#!/usr/bin/env sh
#
# Works best with blinking text: the last heart will blink when you have less
# than 25% of your battery life remaining.
#
# Add the following to your `~/.tmux.conf`;
#
# set -g status-right "#[fg=red]#(path/to/zelda-battery-tmux.sh) "
battery="$(pmset -g ps | awk 'NR==2' | perl -pe 's/.*?(\d+)%.*/\1/')"
@davidcelis
davidcelis / zelda-battery.sh
Created December 18, 2012 00:28
Output a Zelda-style heart meter for your MacBook's battery level. On the command line. Based on an idea from @stephencelis, executed by myself. For a tmux version, see https://gist.github.com/4324139
#!/usr/bin/env zsh
#
# Works best with blinking text; the last heart will blink
# when you have less than 25% of your battery life remaining.
BATTERY="$(pmset -g ps | awk 'NR==2' | perl -pe 's/.*?(\d+)%.*/\1/')"
if [[ $BATTERY -lt 25 ]]; then
echo "\e[5;31m♥\e[0;31m♡♡\e[0m"
elif [[ $BATTERY -lt 50 ]]; then
@ndarville
ndarville / business-models.md
Last active February 27, 2025 10:00
Business models based on the compiled list at http://news.ycombinator.com/item?id=4924647. I find the link very hard to browse, so I made a simple version in Markdown instead.

Business Models

Advertising

Models Examples
Display ads Yahoo!
Search ads Google
@hchoroomi
hchoroomi / .osx
Created December 11, 2012 14:34
OS X Hidden Settings
#!/bin/bash
# ~/.osx — http://mths.be/osx
# Ask for the administrator password upfront
sudo -v
# Keep-alive: update existing `sudo` time stamp until `.osx` has finished
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &