scala-extensions: Useful extensions for the Scala standard library http://cvogt.org/scala-extensions/ Contents: Type-level constraints (org.cvogt.constraints) - Comparisons: <:<, =:=, >:>, !=:=, !<:<, !>:>, e.g. String !=:= And - Boolean Algebra: True, False, ==, !, &&, ||, Implies, Xor - Subset tests: In, NotIn, e.g. Int NotIn (Any,AnyRef,AnyVal) Collection extensions (org.cvogt.collection) - distinctBy - remove duplicates by key - foldWhile / reduceWhile - stoppable accumulation For usage see: src/test/scala/* Sbt setup: libraryDependencies += "org.cvogt" %% "scala-extensions" % "0.2" resolvers ++= Seq( "Sonatype Snapshots" at "https://oss.sonatype.org/content/repositories/snapshots", "Sonatype Releases" at "https://oss.sonatype.org/service/local/staging/deploy/maven2" )