Juanpe/Counter

pod "Counter"

import Counter

let counter = Counter() // 0
counter.increment()     // 1

counter.increment(2)    // 3

counter.decrement()     // 2

counter.reset()         // 0

counter.sum(countables: 2, 3, -1)  // 4

protocol Countable {
    var deltaValue: Int { get }
}

struct Person {
    var age: Int
}

extension Person: Countable{
    var deltaValue: Int {
        return self.age
    }
}

let dad = Person(age: 45)
let mum = Person(age: 40)
let son = Person(age: 25)

let ageCounter = Counter()
ageCounter.increment(dad)
ageCounter.increment(mum)
ageCounter.increment(son)

print(ageCounter.currentValue) // 110

// Also you can use `sum` method or static method

ageCounter.sum(countables:dad, mum, son) // 110

let ages = Counter.sum(countables:dad, mum, son) // 110

protocol CounterDelegate{
    func counter(_ counter: Counter, willReachValue value: Int)
    func counter(_ counter: Counter, hasReachedValue value: Int)
    func counter(_ counter: Counter, didChangeValue value: Int)
}

counter.add(milestone: 3)

let automaticCounter = AutomaticCounter(startIn: 0) // takes default parameters (interval: 1, autoIncrement: 1)
automaticCounter.delegate = self
automaticCounter.automaticDelegate = self
automaticCounter.startCounting()

DispatchQueue.main.asyncAfter(deadline: .now() + 3) {
    automaticCounter.endCounting()
}

/* output
counter(_:didChangeValue:) => 1
counter(_:didChangeValue:) => 2
counter(_:didChangeValue:) => 3
counter(_:didFinishCounting:) => 3
*/

let automaticCounter = AutomaticCounter(startIn: 0, interval: 0.5, autoIncrement: 1)
automaticCounter.delegate = self
automaticCounter.automaticDelegate = self
automaticCounter.startCounting(endingAt: 10)

/* output
counter(_:didChangeValue:) => 1
counter(_:didChangeValue:) => 2
counter(_:didChangeValue:) => 3
counter(_:didChangeValue:) => 4
counter(_:didChangeValue:) => 5
counter(_:didChangeValue:) => 6
counter(_:didChangeValue:) => 7
counter(_:didChangeValue:) => 8
counter(_:didChangeValue:) => 9
counter(_:didChangeValue:) => 10
counter(_:didFinishCounting:) => 10
*/

let automaticCounter = AutomaticCounter(startIn: 0, interval: 1)
automaticCounter.delegate = self
automaticCounter.automaticDelegate = self
automaticCounter.startCounting(endingAfter: 3)

/* output
counter(_:didChangeValue:) => 1
counter(_:didChangeValue:) => 2
counter(_:didChangeValue:) => 3
counter(_:didFinishCounting:) => 3
*/

MIT License

Copyright (c) 2017 Juanpe Catalán

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.