Chainable validation, inspired by the Validated monad, but a bit less complex, and a bit less smart.

I must admit that I wrote this when I was very tired and it's for a friend, but I don't even know if this is what he needs.

I added the K at the end because, well, most Kotlin libraries do that. The name Validation is just boring without it.

    Validation.buildChain<String>()
            .validate { check("failure") { some boolean expression} }
            .validate {
                when {
                    x -> success()
                    else -> failure("blah blah")
                }
            }
            .evaluate(
                onInvalid = { failure: String ->
                    // something failed
                },
                onValid = {
                    // everything passed
                }
            )

The chain is evaluated only when evaluate is called.

No release yet, but the whole project is one file, so if you need it, you can add it into your project, or at least try it, figure out if it even makes sense, etc.

Copyright 2018 Gabor Varadi

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.
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