Question

I find myself needing to put guards like this:

if hash[:foo] && hash[:foo][:bar] && hash[:foo][:bar][:baz] 
    puts hash[:foo][:bar][:baz]
end

I’d like to shorten this in some way; I know I can wrap in a begin/rescue block but that seems worse. Maybe something like:
ruby Hash include another hash, deep check

Answer 1

Something like:

def follow_hash(hash, path)
  path.inject(hash) { |accum, el| accum && accum[el] }
end

value = follow_hash(hash, [:foo, :bar, :baz])
puts value if value