tree e3c73b6af1e4dd2d47eff21a43c784fda44a4143
parent 69766daafbaa8535d1343fb7cd87e713f57c107f
author Marc Plano-Lesay <marc.planolesay@gmail.com> 1654209971 +1000
committer GitHub <noreply@github.com> 1654209971 -0700
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Introduce a new lastBy() function (#223)

Similar to groupBy(), except that it only keeps the latest value
corresponding to a given key.

Prior art: [Kotlin](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.sequences/associate-by.html)