This is a lightweight library for general purpose bin-packing of a collection with arbitrary values.
- Scala 2.12
libraryDependencies += "com.github.alexsniffin" %% "packerman" % versionThe design of this library allows you to define your usage on how to bin-pack your input collection.
case class Input(key: String, value: Int)
val collection = Seq(
Input("29b482bca2af868b0cc6c7c409fe3d14", 588665550),
Input("d724b748d259fa0f39a4ac776a86ad61", 1045661516),
Input("df1662f0aed98c78c192654461afb6f6", 232359110)
)
val packerman = PackermanEngine(collection)
.groupBy(x => x.key)
.packBy(x => x.value)
.distributionStrategy(UniformDistribution(weighted = true, .5))
.compute()
val output = packerman match {
case Right(result) => result
case l @ Left(err) => l // handle error
}
Distributes the field specified by packBy uniformly from the specified groupBy field.
| Parameters | Description |
|---|---|
| weighted | Specifies if the field will be adjusted against other groups in the collection when distributed. |
| limit | Specifies the upper limit of a group for which to distribute. If the amount of groups * limit < 1, the limit is too small. |