This is a summary of the "Learn You A Haskell" online book under http://learnyouahaskell.com/chapters.
- Haskell is a functional programming language.
// Ever needed to escape '\n' as '\\n'? This function does that for any character, | |
// using hex and/or Unicode escape sequences (whichever are shortest). | |
// Demo: http://mothereff.in/js-escapes | |
function unicodeEscape(str) { | |
return str.replace(/[\s\S]/g, function(character) { | |
var escape = character.charCodeAt().toString(16), | |
longhand = escape.length > 2; | |
return '\\' + (longhand ? 'u' : 'x') + ('0000' + escape).slice(longhand ? -4 : -2); | |
}); | |
} |
NAME=project | |
VERSION=0.0.1 | |
DIRS=etc lib bin sbin share | |
INSTALL_DIRS=`find $(DIRS) -type d 2>/dev/null` | |
INSTALL_FILES=`find $(DIRS) -type f 2>/dev/null` | |
DOC_FILES=*.md *.txt | |
PKG_DIR=pkg | |
PKG_NAME=$(NAME)-$(VERSION) |
This is a summary of the "Learn You A Haskell" online book under http://learnyouahaskell.com/chapters.
/* | |
A Tour of Go: page 44 | |
http://tour.golang.org/#44 | |
Exercise: Loops and Functions | |
As a simple way to play with functions and loops, implement the square root function using Newton's method. | |
In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating: z - (z*z - x) / (2 * z) |
# Unofficial brew formula for proxychains 4 | |
# Instruction: | |
# $ git clone git://gist.github.com/3792521.git gist-3792521 | |
# $ brew install --HEAD gist-3792521/proxychains4_formula.rb | |
# | |
# The default config file will be located in /usr/local/etc/proxychains.conf | |
# | |
require 'formula' | |
class Proxychains < Formula |
In addition to the charts that follow, you might want to consider the Frequently Asked Questions section for a selection of common questions about MongoDB.
The following table presents the MySQL/Oracle executables and the corresponding MongoDB executables.
-server | |
-Xms2048m | |
-Xmx2048m | |
-XX:NewSize=512m | |
-XX:MaxNewSize=512m | |
-XX:PermSize=512m | |
-XX:MaxPermSize=512m | |
-XX:+UseParNewGC | |
-XX:ParallelGCThreads=4 | |
-XX:MaxTenuringThreshold=1 |
# Enable syntax-highlighting in less. | |
# Last tested on CentOS 6.3. | |
# | |
# First, add these two lines to ~/.bashrc | |
# export LESSOPEN="| /usr/bin/src-hilite-lesspipe.sh %s" | |
# export LESS=" -R " | |
sudo yum -y install boost boost-devel ctags | |
wget http://springdale.math.ias.edu/data/puias/unsupported/6/x86_64/source-highlight-3.1.6-3.puias6.x86_64.rpm |
mkdir -p /usr/local/etc/nginx/sites-{enabled,available}
cd /usr/local/etc/nginx/sites-enabled
ln -s ../sites-available/default.conf
ln -s ../sites-available/default-ssl.conf
File locations:
nginx.conf
to /usr/local/etc/nginx/
default.conf
and default-ssl.conf
to /usr/local/etc/nginx/sites-available
homebrew.mxcl.nginx.plist
to /Library/LaunchDaemons/
function int2ip (ipInt) { | |
return ( (ipInt>>>24) +'.' + (ipInt>>16 & 255) +'.' + (ipInt>>8 & 255) +'.' + (ipInt & 255) ); | |
} |