driangle / flunc

function utilities I have found useful in my own projects

Version Matrix

flunc : function utilities I have found useful in my own projects

version: 0.1.0

This package contains a set of function utilities I have found useful in my own projects. I plan to keep adding to this as I find new ones.

Usage

Add a dependency on this package

  resolvers += Resolver.sonatypeRepo("public")
  ...  
  libraryDependencies += "org.driangle" %% "flunc" % "0.1.0"

LazyChain

Use a LazyChain to lazily define operations on a collection of events/messages that will arrive at a future time.

import org.driangle.flunc.LazyChain

// define a chain that will filter out any number not divisible by 2 and then square it
val chain : Function[Int, Unit]  = LazyChain.build[Int]()
      .filter(x => x % 2 == 0)
      .map(x => x * x)
      .foreach(println _)

    // simulating events/messages that will arrive at a future time
    chain(1) // will be filtered out
    chain(2) // will remain, then will be squared, then will be printed
    chain(3) // will be filtered out
    chain(4) // will remain, then will be squared, then will be printed
    chain(5) // will be filtered out

License

   This software is licensed under the Apache 2 license, quoted below.

   Copyright 2019 Germán Greiner

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.