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MergeJoinBy also accept functions returning bool #704

Merged
merged 1 commit into from
Jun 16, 2023
Merged

MergeJoinBy also accept functions returning bool #704

merged 1 commit into from
Jun 16, 2023

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Philippe-Cholet
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Related to #701 . The produced iterator then yields Either items instead of EitherOrBoth items when the user function returns Ordering.

@Philippe-Cholet
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@jswrenn There is no breaking change, that's the all point of the (private) OrderingOrBool trait. The user can still give functions returning Ordering (resulting in an iterator of EitherOrBoth items). Now the user can also give functions returning bool (resulting in an iterator of Either items). ... Then we will be able to merge implementations of MergeJoinBy and MergeBy without breaking anything (which is the purpose of @phimuemue ).

jswrenn
jswrenn reviewed Jun 14, 2023
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@Philippe-Cholet
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I just made a last small change: "L/R" for "Left/Right" types instead of "I/J" that stand for iterators.
Should I squash all those commits ?

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Yes, that would be nice.

@Philippe-Cholet
MergeJoinBy also accept functions returning bool
ae31559 
Done with `trait OrderingOrBool<L, R>`.
Now, `merge_join_by` needs an extra type parameter `T` so this is a breaking change, because any [unlikely] invocations that explicitly provided these parameters are now one parameter short.
Documentation updated, two quickcheck.
@jswrenn jswrenn added this to the next milestone Jun 16, 2023
jswrenn
jswrenn approved these changes Jun 16, 2023
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Thank you so much for this!

bors r+

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@bors bors bot merged commit eb561e5 into rust-itertools:master Jun 16, 2023
@Philippe-Cholet Philippe-Cholet deleted the issue-701 branch June 16, 2023 22:43
@jswrenn jswrenn modified the milestones: next, v11.0.0 Nov 13, 2023
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@Philippe-Cholet @phimuemue @jswrenn