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fs2.scala
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fs2.scala
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/*
* Copyright (c) 2013 Functional Streams for Scala
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package object fs2 {
/**
* A stream transformation represented as a function from stream to stream.
*
* Pipes are typically applied with the `through` operation on `Stream`.
*/
type Pipe[F[_], -I, +O] = Stream[F, I] => Stream[F, O]
/**
* A stream transformation that combines two streams in to a single stream,
* represented as a function from two streams to a single stream.
*
* `Pipe2`s are typically applied with the `through2` operation on `Stream`.
*/
type Pipe2[F[_], -I, -I2, +O] = (Stream[F, I], Stream[F, I2]) => Stream[F, O]
/**
* A pipe that converts a stream to a `Stream[F,Unit]`.
*
* Sinks are typically applied with the `to` operation on `Stream`.
*/
@deprecated("Use Pipe[F, I, Unit] instead", "1.0.2")
type Sink[F[_], -I] = Pipe[F, I, Unit]
/**
* Indicates that a stream evaluates no effects.
*
* A `Stream[Pure,O]` can be safely converted to a `Stream[F,O]` for all `F`.
*/
type Pure[A] <: Nothing
/**
* Alias for `Nothing` which works better with type inference.
*/
type INothing <: Nothing
}