40 lines
680 B
Ruby
40 lines
680 B
Ruby
[1, 2, 3].each { |i| puts i }
|
|
|
|
[1, 2, 3].each do |i|
|
|
if i % 2 == 0
|
|
puts "#{i} is even."
|
|
else
|
|
puts "#{i} is odd."
|
|
end
|
|
end
|
|
|
|
1.upto 3 do |x|
|
|
puts x
|
|
end
|
|
|
|
1.upto(3) { |x| puts x }
|
|
|
|
hello = lambda { "Hello" }
|
|
hello.call
|
|
|
|
log = lambda { |str| puts "[LOG] #{str}" }
|
|
log.call("A test log message.")
|
|
|
|
{1=>2, 2=>4}.each { |k,v| puts "Key #{k}, value #{v}" }
|
|
|
|
def times_n(n)
|
|
lambda { |x| x * n }
|
|
end
|
|
|
|
times_ten = times_n(10)
|
|
puts times_ten.call(5)
|
|
puts times_ten.call(1.25)
|
|
|
|
circumference = times_n(2*Math::PI)
|
|
puts circumference.call(10)
|
|
puts circumference.call(3)
|
|
puts [1, 2, 3].collect(&circumference)
|
|
|
|
ceiling = 50
|
|
puts [1, 10, 49, 50.1, 200].select { |x| x < ceiling }
|