shaggyone/Getting lazy (ruby experiments)

## Getting lazy (ruby experiments)
a = 'a'..'z'
b = 1..1000

x = a.lazy.map { |x| puts "x-#{x}"; b.lazy.map { |y| puts "y-#{y}"; [x, y] } }.flat_map(&:itself);
y = a.lazy.map { |x| puts "y-#{x}"; b.lazy.map { |y| puts "y-#{y}"; [x, y] } }.flat_map(&:itself).take(2);

> x.select { |xx| y.include?(xx) }.any?
x-a
y-1
y-a
y-1
=> true
	a = 'a'..'z'
	b = 1..1000

	x = a.lazy.map { \|x\| puts "x-#{x}"; b.lazy.map { \|y\| puts "y-#{y}"; [x, y] } }.flat_map(&:itself);
	y = a.lazy.map { \|x\| puts "y-#{x}"; b.lazy.map { \|y\| puts "y-#{y}"; [x, y] } }.flat_map(&:itself).take(2);

	> x.select { \|xx\| y.include?(xx) }.any?
	x-a
	y-1
	y-a
	y-1
	=> true