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Ikhun Um ikhoon

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@nacyot
nacyot / 2013-03-04-ruby-trivias-you-should-know-4.md
Last active April 23, 2025 00:36
알아두면 도움이 되는 55가지 루비 기법
anonymous
anonymous / Haskell
Created October 7, 2013 19:22
Comparison of the straightforward embedding of a basic tenet of category theory in Scala vs Haskell.
yonedaLemma = Iso (flip fmap) ($ id)
@milessabin
milessabin / gist:6256495
Last active March 10, 2018 02:26
Path dependent types with an implicit prefix. We can infer the singleton type prefix of a path dependent type and then implicitly summon the unique value of that singleton type.
Welcome to Scala version 2.10.2 (Java HotSpot(TM) 64-Bit Server VM, Java 1.7.0_21).
Type in expressions to have them evaluated.
Type :help for more information.
scala> class Prefix { class Dep { type P = Prefix.this.type } }
defined class Prefix
scala> val (p1, p2) = (new Prefix, new Prefix)
p1: Prefix = Prefix@2212c414
p2: Prefix = Prefix@7e070e85
@oinume
oinume / connect.rb
Created April 1, 2013 10:29
Connecting to MySQL with JRuby and JDBC.
require 'java'
require 'rubygems'
require 'dbi'
require 'dbd/Jdbc'
require 'jdbc/mysql'
Jdbc::MySQL.load_driver
DBI.connect(
'DBI:Jdbc:mysql://localhost/test',
@oscarrenalias
oscarrenalias / ehcache.xml
Created March 1, 2013 08:28
A better ehcache.xml configuration file for the Play Framework, which out of the box limits the size of the cache based on the number of objects you put in it rather than the number of bytes. I personally think that's not a very smart choice. Also see http://ehcache.org/documentation/2.5/configuration/cache-size#cache-configuration-sizing-attrib…
<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd" updateCheck="false">
<!-- This is a default configuration for 256Mb of cached data using the JVM's heap, but it must be adjusted
according to specific requirement and heap sizes -->
<defaultCache
maxBytesLocalHeap="256000000"
eternal="false"
timeToIdleSeconds="120"
timeToLiveSeconds="120"
@ngryman
ngryman / README.md
Last active January 16, 2023 14:07
intellij javascript live templates

intellij javascript live templates

Just a dump of handy live templates I use with IntelliJ. They should also work with WebStorm.

How to

  • Go to settings.
  • Search for live templates.
  • Under the javascript section you should be able to manage your templates.
@dergachev
dergachev / GIF-Screencast-OSX.md
Last active July 31, 2025 21:28
OS X Screencast to animated GIF

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.

Screencapture GIF

Instructions

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

@ayosec
ayosec / 0README.md
Last active February 10, 2017 00:52
Spray: example with a router based on actors

Test with

$ sbt run

And then,

$ curl localhost:8080/mars/hi

$ curl localhost:8080/jupiter/hi

@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active August 1, 2025 13:55
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@jboner
jboner / latency.txt
Last active August 2, 2025 22:26
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD