chenshifei / DenCore

Collection of the core functions in the Dentaku app. Including arithmetic, map and currency conversion.

DenCore

DenCore is a swift library featuring the major functions of a virtual calculator. It is intented to be used together with the Dentaku app, though you can build your own app with it too.

Main Functions

Arithmetic

Elementry level calculation including add, substract, multiply, divison, sin and cos (Though sin and cos aren't really elementray level). Currently DenCore only supports one operator at a time. There is no operator precedence. But later I would switch to RPN expressions to handle complicated equations.

Reverse Geocoding

Parsing readable address from a coordination using the builtin CoreLocation functions.

BTC Currency

Calcuate how much USD your bitcoin worth through the coinbase API.

Usage

Arithmetic

Create a Processor instance and then tap keys like you would do on a real calculator

let processor = Processor() // Simulates a real processor in the calculator
processor.numpadKeyPressed(key: .digit(underlyingValue: 1))
processor.operatorKeyPressed(key: DefaultKeys.Operator.add)
processor.numpadKeyPressed(key: .digit(underlyingValue: 2))
processor.operatorKeyPressed(key: DefaultKeys.Operator.substract)
processor.numpadKeyPressed(key: .digit(underlyingValue: 4))
let result = processor.functionKeyPressed(.equal)

// result = -1

Reverse Geocoding

Create an AntennaDish instance and call its parseLocation() function.

let location = CLLocation(latitude: 59.31, longitude: 18.06)
antennaDish.parseLocation(location) { (result, error) in
    // If success, result is a non-nil CLPlacemark object, otherwise error is a non-nil Error object
    if let placemark = result {
        print(placemark.administrativeArea) // "Stockholm"
    }
}

BTC Currency

Call DefaultEndpoints.Currency.fetchExchangeRates().

DefaultEndpoints.Currency.fetchExchangeRates { (result, error) in
    // If success, result is a non-nil ExchangeRates object, otherwise error is a non-nil Error object
    if let exchangeRates = result {
        print(exchangeRates.data.rates["USD"]) // "10600.2"
    }
}