##Download a repository with submodules
git clone URL MAIN_REPO_DIR
git submodule init
git submodule update
##Add a submodule
cd MAIN_REPO_DIR
sudo add-apt-repository ppa:yannubuntu/boot-repair | |
sudo apt-get update | |
sudo apt-get install -y boot-repair | |
boot-repair |
#!/usr/bin/env ruby | |
# quotes.rb | |
# Picks a random quote from quotes.txt and prints it to stdout. | |
# Quotes should be separated by double newlines (single empty lines) in the file. | |
# We need to define Array#sample if this version of Ruby is really old. | |
unless Array.respond_to? 'sample' | |
class Array | |
def sample | |
self[rand(length)] |
# Set the sum to 0 initially and print its value | |
p sum = 0 | |
# Set i to 0 initially | |
i = 1 | |
# Start an infinite, iterative loop | |
loop do | |
# Add 1/i (as a float to keep this accurate) to sum and print its new value | |
p sum += 1/i.to_f |
/* | |
* Try compiling this. It actually works. | |
* Output: "Hello world" | |
*/ | |
\u0070\u0075\u0062\u006c\u0069\u0063\u0020\u0020\u0020\u0020 | |
\u0063\u006c\u0061\u0073\u0073\u0020\u0055\u0067\u006c\u0079 | |
\u007b\u0070\u0075\u0062\u006c\u0069\u0063\u0020\u0020\u0020 | |
\u0020\u0020\u0020\u0020\u0073\u0074\u0061\u0074\u0069\u0063 | |
\u0076\u006f\u0069\u0064\u0020\u006d\u0061\u0069\u006e\u0028 |
class Array | |
def in_order? | |
(0..length-2).none? { |i| self[i] > self[i+1] } | |
end | |
def bogo_sort | |
copy = self.dup | |
copy.shuffle! until copy.in_order? | |
copy |
##Download a repository with submodules
git clone URL MAIN_REPO_DIR
git submodule init
git submodule update
##Add a submodule
cd MAIN_REPO_DIR
require 'benchmark' | |
Benchmark.bm do |b| | |
b.report "summation equation" do | |
sum = 1_000_000*(1_000_000+1)/2.to_f | |
end | |
b.report "each loop" do | |
sum = 0 |
$ ed | |
i | |
Hello, world! | |
. | |
w hello.txt | |
14 | |
q | |
$ cat hello.txt | |
Hello, world! |
[a = 'hello'].each { |_| b = 'world' } | |
puts a # hello | |
puts b # world |
# REPL: Read Evaluate Print Loop | |
# See http://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop | |
# The prompt for the REPL | |
PROMPT = 'repl> ' | |
# Keep reading, evaluating, and printing forever (or until the user exits) | |
loop do | |
# Display the prompt | |
print PROMPT |