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Understanding ruby blocks

What is a good conceptual way to look at Ruby blocks?

if I have an Array, A, and I pass it to the following function:

def MergeSort(&var)
...
end

And then run the function, passing an Array into it:

MergeSort(A)

Will the array A be treated like a block in the function? What is the benefit of blocks, and what are good patterns to use them in? I realize these are kind of unrelated and potentially random questions; any answer that clarifies Ruby blocks would be appreciated.

Solution

  • Understanding Ruby Blocks, Procs and Lambdas by Robert Sosinski explains it very thoroughly.