[winstonsmith]

My frustration is that you can't pass foo as an argument to another function.

[tomstuart]

Right, I see, because you have to say `method(:foo)` or `-> { foo }` or whatever. To me this is an acceptable syntactic trade-off in exchange for being able to invoke the method with bare `foo` (i.e. variable reads and method calls look the same) but I can see from other comments here that some people dislike that ability anyway. Vive la différence!

[chrisseaton]

But you can. Method objects, proc objects, lambda objects, blocks, you've got a wealth of options here in Ruby.