Ruby/for

for

for i in 1..3 do
  print("i=", i)
end

foreach

range = 1..3
range.each do |i|
  print("i=", i)
end

文字列foreach

names = ["taro", "jiro", "sabu"]
for name in names
  print("name=", name)
end

for(key,value)

user = {:name => "taro", :age => "10", :birth => "1980-10-10"}
for key, value in user
   print("key=", key, " value=", value)
end

foreach(key,value)

user = {"name" => "taro", "age" => "10", "birth" => "1980-10-10"}
user.each do |key, value|
   print("key=", key, " value=", value)
end