I use Symbol#to_proc every day. I've never cared for the term "inject", though (or Python's "reduce", for that matter); I find SICP's "accumulate" much more mn

I use Symbol#to_proc every day. I've never cared for the term "inject", though (or Python's "reduce", for that matter); I find SICP's "accumulate" much more mnemonic. For what it's worth, (1..100).to_a.sum works in Rails, though (1..100).sum doesn't.