fdelacruz

#!/bin/bash -xe

readonly TARGET_ARCH=aarch64-unknown-linux-gnu
readonly SOURCE_PATH="./target/$TARGET_ARCH/release/hello-world"
readonly TARGET_PATH=/home/fdelacruz/workspace/cross_build
# readonly PI_IP=192.168.1.x
readonly TARGET_HOST=fdelacruz@$PI_IP
readonly PORT=2202

cargo install -f cross

fdelacruz

xcode-select --install
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew update
brew cask install iterm2
# update iterm2 settings -> solarized presets
brew install git
brew cask install spectacle
brew cask install alfred
# set CMD+space to launch alfred
brew cask install firefox

fdelacruz

def proc_test
  proc = Proc.new { return }
  proc.call
  puts "Hello world"
end

proc_test  # calling proc_test prints nothing

fdelacruz

def lambda_test
  lam = lambda { return }
  lam.call
  puts "Hello world"
end

lambda_test  # calling lambda_test prints 'Hello World'

fdelacruz

proc = Proc.new { |x| puts x } # creates a proc that takes 1 argument
proc.call(2)                   # prints out 2
proc.call                      # returns nil
proc.call(1,2,3)               # prints out 1 and forgets about the extra arguments

fdelacruz

lam = lambda { |x| puts x }    # creates a lambda that takes 1 argument
lam.call(2)                    # prints out 2
lam.call                       # ArgumentError: wrong number of arguments (0 for 1)
lam.call(1,2,3)                # ArgumentError: wrong number of arguments (3 for 1)

fdelacruz

lambda { puts "Hello!" }

#Is just about the same as

Proc.new { puts "Hello!" }

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cube = Proc.new { |x| x ** 3 }

[1, 2, 3].collect!(&cube)    #=>[ 1, 8, 27]

[4, 5, 6].map!(&cube)       #=>[64, 125, 216]

fdelacruz

array = [1, 2, 3, 4]

array.collect! do |n|
  n ** 2
end

puts array.inspect      # => [1, 4, 9, 16]

fdelacruz

class Gear
  attr_reader :chainring, :cog, :rim, :tire
  def initialize(chainring, cog, rim, tire)
    @chainring = chainring
    @cog       = cog
    @rim       = rim
    @tire      = tire
  end

  def ratio