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Ruby Ruby Foundations Blocks Yield

abhishek pareek
PLUS
abhishek pareek
Courses Plus Student 3,905 Points
Posted by abhishek pareek
abhishek pareek
Courses Plus Student 3,905 Points

Passing a block as a parameter to a function while using yield?

I see that Jason is passing a block as a parameter to a function in the latter half of the video.

However I don't know if that is useful as the block itself isn't being explicitly called here ala block.call. So the parameter being passed is redundant and not being used.

Opinions?

1 Answer

Jack Choi
Jack Choi
11,420 Points
Jack Choi
Jack Choi
11,420 Points

You're correct in that it's certainly not necessary to explicitly have &block as a parameter in this case. I'm not entirely sure either but one reason I can think of is for readability (or self-documenting code). Without the block parameter in the function signature one wouldn't know it takes a block with a quick glance. Of course, you can always go through the function and see that there's a yield somewhere in the function.