Anything wrong with this? am I just making trouble?

Rails
1

I have included this extension to Hash in my rails app…

class Hash
def method_missing(name, value=nil)
key = name.to_s.sub(/[=?!]$/,’’).to_sym
self[key] = value if name.to_s[-1,1] == “=”
return self[key]
end
end

I basically lets a plane old Hash behave like the fancy OpenStruct, so
you can do things like hash.amount = 10 instead of hash[:amount] =
10. It uses method_missing to do its stuff.

h = Hash.new
=> {}

h.a = 1
=> 1

h.b = 2
=> 2

h.c = 3
=> 3

pp h
{:a=>1, :b=>2, :c=>3}
=> nil

h.h = Hash.new
=> {}

h.h.a = 1
=> 1

h.h.b = 2
=> 2

h.h.c = 3
=> 3

pp h
{:a=>1, :b=>2, :c=>3, :h=>{:a=>1, :b=>2, :c=>3}}
=> nil

2

On 28 Nov 2007, at 16:47, uncle wrote:

I basically lets a plane old Hash behave like the fancy OpenStruct, so
you can do things like hash.amount = 10 instead of hash[:amount] =
10. It uses method_missing to do its stuff.

I suppose the danger is that the day you do hash.delete_if! instead of
getting a no method error it will just work and lead to a less easy to
understand error further down the road.

Fred