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Ruby

Brian Weeks
Brian Weeks
4,967 Points
Posted by Brian Weeks
Brian Weeks
4,967 Points

Is there a difference between yield and &block with block.call

Is there any functional difference between yield and using &block with block.call? When might I use one over the other?

1 Answer

Nathan Williams
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Nathan Williams
Python Web Development Techdegree Student 6,851 Points
Nathan Williams
.a{fill-rule:evenodd;}techdegree
Nathan Williams
Python Web Development Techdegree Student 6,851 Points

yield is implicit, meaning it executes a block (if passed) immediately. &block is explicit, so you actually get a variable that refers to the block, and you could potentially pass the block into another method as an argument :)

it's also a little clearer to users looking at the method signature that the method expects a block, so if it's required, you'd probably want to make it explicit.