How does the "yeld" method work?

Question

ruby

Guys, explain on your fingers how this method works, otherwise I’m completely in a stupor

Answer 1

Calls the block passed to the method

def some_method(&block)
   yield
end

some_method { puts 'hello from Proc'}
# Напечатает  hello from Proc

Or with an argument

def some_method(agrument,&block)
   yield (agrument)
end

some_method('ITS ARGUMENT') {|argument| puts "hello from Proc with #{argument}"}
# Напечатает hello from Proc with ITS ARGUMENT

Answer 2

Are you talking about the "yield" keyword? Read about generators .

Answer 3

On the fingers - By calling yield in the body of a method, we mean the following: transfer control to the block, and when it finishes, return control to this method .

Answer 4

Here it is well described: nashbridges.me/blocks-in-ruby

Answer 5

yield, as it were, teleports the code to its place