Convert

Ruby
1

Hello

I wonder if there is a simple way to convert all keys in a Hash to
member variables in a Class without knowing the key names in the Hash
beforehand.

example
MyHash[“ada”] = “yes”
MyHash[“beda”] = “no”
MyHash[“foo”] = “bar”
…
…
…
MyHash[“whatever”]=‘whatever’

can be accessed via the point operator

myClass.ada
myClass.beda
myClass.foo
…
…
…
myClass.whatever

/Joakim

2

Joakim O. wrote:

Hello

I wonder if there is a simple way to convert all keys in a Hash to
member variables in a Class without knowing the key names in the Hash
beforehand.

vars = {:foo => 101, :bar => 42, :baz => 1337}
vars.each do |name, value|
SomeClass.instance_variable_set("@#{name}", value)
end

You could also use an OpenStruct.

Cheers,
Daniel

3

Daniel S. wrote:

end

You could also use an OpenStruct.

That won’t work, because it doesn’t create accessors.

This has been discussed recently a couple of times.

Ruby Quiz - Hash to OpenStruct (#81)

Also, the simple answer is this:

require ‘ostruct’
obj = OpenStruct.new(hash)

Cheers,
Dave

4

Dave B. wrote:

end

You could also use an OpenStruct.

That won’t work, because it doesn’t create accessors.

Ahh, didn’t see the last part of the post!

(Damn these trigger-happy fingers of mine!)

Cheers,
Daniel

5

Thanks

/Joakim