block_to_proc_conversion.md

🔗 Convert Blocks to Proc Objects with &block

Sometimes you need to store or pass a block around as a Proc. Prefixing a method parameter with & automatically converts the incoming block to a Proc. You can then call, pass, or combine it with other procs seamlessly.

def repeat(n, &block)
  n.times { block.call }
end

say_hi = proc { puts 'Hi!' }
repeat(3, &say_hi)
# Outputs:
# Hi!
# Hi!
# Hi!