zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

morimori

ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-linux]
Rehearsal ------------------------------------------
MD5      1.010000   0.000000   1.010000 (  1.026340)
SHA1     1.710000   0.000000   1.710000 (  1.724464)
SHA2     3.780000   0.000000   3.780000 (  3.824757)
SHA256   3.460000   0.010000   3.470000 (  3.498111)
--------------------------------- total: 9.970000sec

             user     system      total        real
MD5      1.020000   0.000000   1.020000 (  1.025751)

kyanny

# rbenv
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
source ~/.rbenv/completions/rbenv.bash

# prompt with ruby version
# rbenv version | sed -e 's/ .*//'
__rbenv_ps1 ()
{
  rbenv_ruby_version=`rbenv version | sed -e 's/ .*//'`

shunchu

t = 236 # seconds
Time.at(t).utc.strftime("%H:%M:%S")
=> "00:03:56"

# Reference
# http://stackoverflow.com/questions/3963930/ruby-rails-how-to-convert-seconds-to-time

whity-82

require 'gosu'

class GameWindow < Gosu::Window
  def initialize
    super 640,  480,  false
    self.caption = "Gosu Tutorial Game"

    @font = Gosu::Font.new(self, Gosu::default_font_name, 20)
  end

brianr

angular.module('exceptionOverride', []).factory('$exceptionHandler', function() {
  return function(exception, cause) {
    Rollbar.error(exception, {cause: cause});
    throw exception;
  };
});

JamesMcMahon

def lerp(start, stop, step)
  (stop * step) + (start * (1.0 - step))
end

tntmeijs

public static float Noise3D(float x, float y, float z, float frequency, float amplitude, float persistence, int octave, int seed)
	{
		float noise = 0.0f;

		for (int i = 0; i < octave; ++i)
		{
			// Get all permutations of noise for each individual axis
			float noiseXY = Mathf.PerlinNoise(x * frequency + seed, y * frequency + seed) * amplitude;
			float noiseXZ = Mathf.PerlinNoise(x * frequency + seed, z * frequency + seed) * amplitude;
			float noiseYZ = Mathf.PerlinNoise(y * frequency + seed, z * frequency + seed) * amplitude;

fernandoaleman

For MacOS Catalina, visit Install mysql2 on MacOS Catalina

Problem

Installing mysql2 gem errors on MacOS Mojave.

Solution

Make sure openssl is installed on Mac via Homebrew.

fguillen

module MyWrapperCreator
  def my_method_wrapper(method_name)
    original_method = instance_method(method_name)

    define_method(method_name) do |*args, &block|
      puts "wrapper :: INI"
      result = original_method.bind(self).call(*args, &block)
      puts "wrapper :: END"

      result