toctan

irb(main):001:0> require 'benchmark'
=> true
irb(main):002:0> puts Benchmark.measure { system "xclip .bashrc" }
  0.000000   0.000000   0.000000 (  0.008030)
=> nil
irb(main):003:0> puts Benchmark.measure { `xclip .bashrc` }
  0.000000   0.000000   0.000000 ( 33.215158)
=> nil
irb(main):004:0> RUBY_VERSION
=> "2.0.0"

toctan

RSpec.configure do |config|
  config.use_transactional_fixtures = false

  config.before(:suite) do
    DatabaseCleaner.clean_with(:truncation)
  end

  config.before(:each) do
    DatabaseCleaner.strategy = :transaction
  end

toctan

Rails::Rack::Logger.class_eval do
  def call_with_quiet_assets(env)
    previous_level = Rails.logger.level
    Rails.logger.level = Logger::ERROR if env['PATH_INFO'].index("/assets/") == 0
    call_without_quiet_assets(env).tap do
      Rails.logger.level = previous_level
    end
  end
  alias_method_chain :call, :quiet_assets
end

toctan

.topic__node {
  @extend .ui.red.label;
  @extend .zeta;
  position: relative;
  left: 1.55rem;
  float: right;
  margin: 0.2rem 0;
  padding: 0 1em 0.1em 0.8em;
  border-color: rgba(0, 0, 0, 0.15);
  border-radius: 4px 0px 0px 4px;

toctan

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>KeepAlive</key>
  <true/>
  <key>Label</key>
  <string>org.shadowsocks</string>
  <key>ProgramArguments</key>
  <array>

toctan

;; Exercise 1.1

10                     ;Value: 10

(+ 5 3 4)              ;Value: 12

(- 9 1)                ;Value: 8

(/ 6 2)                ;Value: 3

toctan

@@foo = 'foo'

Object.class_variable_get(:@@foo) # => "foo"

class Bar
  def self.foo
    @@foo
  end
end

toctan

(define (lat? l)
  (cond ((null? l) #t)
        ((atom? (car l)) (lat? (cdr l)))
        (else #f)))

(define (member? a lat)
  (cond ((null? lat) #f)
        ((eq? a (car lat)) #t)
        (else (member? a (cdr lat)))))

toctan

(define (sum-int a b)
  (if (> a b)
      0
      (+ a
         (sum-int (1+ a) b))))

(define (sum-sq a b)
  (if (> a b)
      0
      (+ (square a)

toctan

(define (sqrt x)
  (define tolerance 0.00001)
  (define (good-enough? y)
    (< (abs (- (square y) x))
       tolerance))
  (define (improve y)
    (average (/ x y) y))
  (define (try y)
    (if (good-enough? y)
        y