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function sum(from, to) { | |
let total = 0 | |
for (let i = from; i <= to; i += 1) { | |
total += i | |
} | |
return total | |
} |
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#!/bin/sh | |
# | |
# Check for ruby style errors | |
red='\033[0;31m' | |
green='\033[0;32m' | |
yellow='\033[0;33m' | |
NC='\033[0m' | |
if git rev-parse --verify HEAD >/dev/null 2>&1 |
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require 'benchmark' | |
# Levenshtein algorithm written in pure ruby. | |
# https://github.com/threedaymonk/text | |
require 'text' | |
# Levenshtein algorithm in C++ with ruby wrapper | |
# https://github.com/dbalatero/levenshtein-ffi | |
require 'levenshtein' |
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Plugboard = Hash[*('A'..'Z').to_a.shuffle.first(20)] | |
Plugboard.merge!(Plugboard.invert) | |
Plugboard.default_proc = proc { |hash, key| key } | |
def build_a_rotor | |
Hash[('A'..'Z').zip(('A'..'Z').to_a.shuffle)] | |
end | |
Rotor_1, Rotor_2, Rotor_3 = build_a_rotor, build_a_rotor, build_a_rotor |
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# Usage: | |
# | |
# peak_memory = track_memory do | |
# 1000000.times { |i| puts i } | |
# end | |
# | |
# puts peak_memory | |
# -> 845073 | |
require 'thread' |
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# Usage | |
# DJ config | |
require Rails.root.join('lib', 'dj_plugin.rb') | |
Delayed::Worker.plugins << Delayed::Plugins::EmailNotify | |
# lib/dj_plugin.rb | |
require 'exception_notification' |
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def gravatar_url(size) | |
gravatar_id = Digest::MD5.hexdigest(email.downcase) | |
"http://gravatar.com/avatar/#{gravatar_id}.png?s=#{size}" | |
end |
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def self.easter(year) | |
y = year | |
a = y % 19 | |
b = y / 100 | |
c = y % 100 | |
d = b / 4 | |
e = b % 4 | |
f = (b + 8) / 25 | |
g = (b - f + 1) / 3 | |
h = (19 * a + b - d - g + 15) % 30 |
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# It extends activeadmin to show pretty boolean values | |
# | |
# config/initializers/active_admin.rb | |
module ActiveAdmin | |
module Views | |
class TableFor | |
def bool_column(attribute) | |
column(attribute){ |model| model[attribute] ? '✔'.html_safe : '✗'.html_safe } | |
end |
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