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Writing a method that takes a block is very similar to writing any other method. In this video, you'll learn to write your own block methods.
Code Samples
Our first block:
def block_method
puts "This is the first line in block_method."
end
block_method do
puts "This statement is called from the block."
end
This doesn't do anything! Why? We need to tell Ruby what to do with the block. We do that with the yield
keyword which will jump out of the method and execute the block:
def block_method
puts "This is the first line in block_method."
yield
puts "This statement is after the yield keyword."
end
block_method do
puts "This statement is called from the block."
end
This will print out:
This is the first line in block_method.
This statement is called from the block.
This statement is after the yield keyword.
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