demo.rb

def my_method
  yield
  "method"
end

my_method { return 'block' }

# => raises `LocalJumpError: unexpected return`


def my_method(proc_argument)
   proc_argument.call
   "method"
end

my_method(Proc.new { return 'block' })

# => still raises `LocalJumpError: unexpected return`!


def proc_method
  Proc.new { return 'proc' }.call
  puts 'method'
end

proc_method

# => returns 'proc', `puts 'method'` is never called


def my_method
   yield
   puts 'after yield'
end

def calling_method
    my_method {  return "returned early" }
    puts "after the call of my_method"
end

x = calling_method

# => x is set to 'returned early', neither of of the `puts` statements
#    execute and print anything to console, because it returned early