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compare_and_set

concur.atomic.compare_and_set

(expected T, new_value T)
 => 
bool
Perform a bit-wise comparison of the value contained in this atomic and
`expected`. In case both values are equal, replace this value with `new_value`.

returns true, if successful
0.095dev (GIT hash 5a97c5766ea04e5412cbfaed4c53658737cd2e4b)