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Objective
When using
set_if_neq
, sometimes you'd like to know if the new value was different from the old value so that you can perform some additional branching.Solution
Return a bool from this function, which indicates whether or not the value was overwritten.
Changelog
DetectChangesMut::set_if_neq
now returns a boolean indicating whether or not the value was changed.Migration Guide
The trait method
DetectChangesMut::set_if_neq
now returns a boolean value indicating whether or not the value was changed. If you were implementing this function manually, you must now returntrue
if the value was overwritten andfalse
if the value was not.