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@quchen
quchen / trolling_haskell
Last active November 12, 2024 00:10
Trolling #haskell
13:15 <xQuasar> | HASKELL IS FOR FUCKIN FAGGOTS. YOU'RE ALL A BUNCH OF
| FUCKIN PUSSIES
13:15 <xQuasar> | JAVASCRIPT FOR LIFE FAGS
13:16 <luite> | hello
13:16 <ChongLi> | somebody has a mental illness!
13:16 <merijn> | Wow...I suddenly see the error of my ways and feel
| compelled to write Node.js!
13:16 <genisage> | hi
13:16 <luite> | you might be pleased to learn that you can compile
| haskell to javascript now
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NewPersonValidator = Validator.define do
validates_presence_of :name
end
class Person
attr_accessor :name
def initialize(name); @name = name; end
end
person = Person.new("Frank")
@roidrage
roidrage / wrap.rb
Last active May 3, 2018 04:46
A simple wrapper that forks off a child and prints out a progress dot every X seconds
#!/usr/bin/env ruby
pid = Kernel.fork do
`#{ARGV.join(" ")}`
exit
end
trap(:CHLD) do
print "\n"
exit
@andelf
andelf / beam_decompile.erl
Created March 19, 2013 03:25
Erlang BEAM file decompile to .erl file
#!/usr/bin/env escript
% -*- mode: erlang -*-
main([BeamFile]) ->
{ok,{_,[{abstract_code,{_,AC}}]}} = beam_lib:chunks(BeamFile,[abstract_code]),
io:fwrite("~s~n", [erl_prettypr:format(erl_syntax:form_list(AC))]).
package ;
// hots classes
using hots.ImplicitInstances;
using hots.ImplicitCasts;
// Javascript API
import js.JQuery;
import js.Lib;
import js.Browser.document;
@bugant
bugant / dining_philosophers.rb
Last active December 30, 2015 08:16
Dining Philosophers solution using Celluloid
#!/usr/bin/env ruby
require 'rubygems'
require 'bundler/setup'
require 'celluloid'
class Table
include Celluloid
CHOPSTICK_FREE = 0
CHOPSTICK_USED = 1
@pbailis
pbailis / rapgenius-balancing.md
Last active July 23, 2019 12:57
Randomized load balancing comparison

RapGenius has an interesting post about Heroku's randomized load balancing, complaining about how random placement degrades performance compared to prior omniscient approaches. RapGenius ran some simulations, including an experiments with a "Choice of Two" method:

Choice of two routing is the naive method from before, with the twist that when you assign a request to a random dyno, if that dyno is already busy then you reassign the request to a second random dyno, with no regard for whether the second dyno is busy

This differs subtly but substantially from the standard "Power of Two Choices" randomized load balancing:

each [request] is placed in the least loaded of d >= 2 [Dynos] chosen independently and uniformly at random

Take a look at the difference in queue lengths below, for 200 Dynos, 100

@grantr
grantr / curvecp_handshake.rb
Last active July 19, 2018 15:16
CurveCP handshake protocol in Ruby
# A demonstration of the CurveCP handshake protocol. This protocol has many
# favorable security properties described at http://curvecp.org.
#
# In addition to its security advantages, it has the following favorable properties:
# * Needs only 2 messages (1 from client, 1 from server) before application
# messages can be exchanged (3 before the server can send application messages)
# * Does not require the server to keep protocol state between handshake messages.
#
# An overview of the protocol:
#
(ns net.cgrand.decay
"Exponentially decaying lists. See http://awelonblue.wordpress.com/2013/01/24/exponential-decay-of-history-improved/
for background and http://clj-me.cgrand.net/2013/02/12/decaying-lists-log-scale-for-lists/ for documentation")
;; PRNG, formulas straight from java.util.Random javadoc
(defn- seed ^long [^long n]
(bit-and (unchecked-multiply n 0x5DEECE66D)
(unchecked-dec (bit-shift-left 1 48))))
(defn- next-seed ^long [^long seed]