scala-extensions

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scala-extensions: Useful extensions for the Scala standard library http://cvogt.org/scala-extensions/

Contents:

Type-level helpers

• EnumerateSingletons - listing all objects extending a sealed trait
• Defaults - object giving names access to a class's default values

Collection extensions (org.cvogt.collection)

• distinctBy - remove duplicates by key
• foldWhile / reduceWhile - stoppable accumulation
• concat - type-safe alternative to mkString
• containsTyped

String extensions

• stripIndent - alternative to stripMargin not requiring |
• indent/indent(n) - indents each line
• commonLinePrefix, trimLeft, trimRight, trimLinesLeft, trimLinesRight
• containsTyped

Debug (org.cvogt.scala.debug)

• printCodeAfterTyper(...) - Prints code after implicits, macros and code desugaring have been applied.
• (t: Throwable).showStackTrace that returns stack tract as string

Type safety

• safe"..." alternative to s"..." that requires explicit toString conversions rather than implicit

Type-level constraints (org.cvogt.constraints)

• CaseClass and SingletonObject type classes
• Comparisons: <:<, =:=, >:>, !=:=, !<:<, !>:>, e.g. String !=:= And
• Boolean Algebra: True, False, ==, !, &&, ||, Implies, Xor
• Subset tests: In, NotIn, e.g. Int NotIn (Any,AnyRef,AnyVal)

Others

• alternative -> that works as constructor, extractor, type

For usage see: src/test/scala/*

Sbt setup:

libraryDependencies += "org.cvogt" %% "scala-extensions" % "0.5.3"