Ruby Hash.merge with specified keys only
- by ba
I'm pretty sure I saw on a Rails related site something along the lines of:
def my_function(*opts)
opts.require_keys(:first, :second, :third)
end
And if one of the keys in require_keys weren't specified, or if there were keys that weren't specified, an exception was raised. I've been looking through ActiveSupport and I guess I might be looking for something like the inverse of except.
I like to try and use as much of the framework as possible compared to writing my own code, that's the reason I'm asking when I know how to make the same functionality on my own. :)
At the moment I'm doing it through the normal merge routine and making sure that I have what I need with some IFs.
