Could cache_set return the insered element ?

[Stargateur]

or even a tuple of the reference of the key and value.

I'm currently doing a set and a get doing two hash compute and find for something that could only take one step.

[jaemk]

I'd be open to adding a separate cache_set_return and cache_set_return_mut

[Stargateur]

cause set already borrow self as mut, there is no need for two method. also cache_set() should already return either the old value or the new one.

[jaemk]

All of this should be out now in 0.15.0