Alpha | Ruby

http://lrthw.github.io/ex16/

加減乘除

Addition (+)

Subtraction (-)

Multiplication (*)

Division (/)

Exponentiation 指數(**)

Modulo (%)

輸入/輸出

puts "What's up?"
print "Oxnard Montalvo"




找出資料夾































































字串的打法




1.%+變數名稱










1
2
3

name1 = "Joe"
name2 = "Mary"
puts "Hello %s, where is %s?" % [name1, name2]







2.#{}












1
2
3

name1 = "Joe"
name2 = "Mary"
puts "Hello #{name1}, where is #{name2}?"










gets.chomp







require模組/函式庫/功能



require 'open-uri'

open("http://www.ruby-lang.org/en") do |f|
  f.each_line {|line| p line}
  puts f.base_uri         # <URI::HTTP:0x40e6ef2 URL:http://www.ruby-lang.org/en/>
  puts f.content_type     # "text/html"
  puts f.charset          # "iso-8859-1"
  puts f.content_encoding # []
  puts f.last_modified    # Thu Dec 05 02:45:02 UTC 2002
end












ARGV解包(unpack)