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Convert from enum ordinal/constant to enum type

will zhang
Ranch Hand

Joined: Sep 11, 2008
Posts: 46
I want to get enum type based on the code(an int)
Here's what I have using switch:



Is there any way I can use instead of switch?

I saw something here: http://stackoverflow.com/questions/609860/convert-from-enum-ordinal-to-enum-type
But I couldn't understand the second method, any hint?

Thanks
John de Michele
Rancher

Joined: Mar 09, 2009
Posts: 600
Will:

You could create a static Map with your codes as keys and your enums as values.

John.
Rob Spoor
Sheriff

Joined: Oct 27, 2005
Posts: 19783
    
  20

Or loop over the array returned by values():
It's a bit of a choice which one to use, the loop or the Map. The Map is faster (O(1)) but requires extra memory to store it. The loop doesn't need the memory but needs to loop each time (O(n)).


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