Comments (3)
Nak from my side.
I only want the equalizer functionnalities for some objects, not all object of a class, so I define the equalizer like this:
Make a specific subclass where you include the Equalizer, and all objects you want to be equalized instances of that equalized subclass. Using Object#extend
this way is IMO just hiding a design smell.
from equalizer.
@phurni Extending an object at runtime actually wipes our your entire global method cache. The performance impact of this technique is one of the reasons that DCI quickly fell out of favour in the ruby community a few years ago.
If you really must do it conditionally, I would suggest creating proxy objects that use Equalizer
, and wrap your own objects in them and use those for equality testing.
from equalizer.
Yes, wrapping them was my first design. Then, because the number of objects could have been high, I tried to avoid the wrapping to reduce the performance hit. This was a faulty pre-optimization decision of my own.
Thanx for the reminder.
from equalizer.
Related Issues (10)
- Support for inheritance? HOT 2
- Bump to 1.0.0? HOT 2
- Equalizer causes “Undocumentable mixin” warning in YARD HOT 3
- Wrong devtools version in Gemfile
- Private `#hash` method is slow
- Change `#==` dependency from `#coerce` to `#equalizer_coerce`
- Adamantium dep not being picked up by rubygems HOT 5
- Equality with Object.new HOT 12
- Do not freeze during .new (Adamantium) HOT 12
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from equalizer.