stefc

.DS_Store
/.build
/Packages
/*.xcodeproj

Package.resolved
!*.xcodeproj/project.pbxproj
!*.xcodeproj/xcshareddata/
!*.xcodeproj/*_Info.plist

stefc

// swift-tools-version:4.0
// The swift-tools-version declares the minimum version of Swift required to build this package.

import PackageDescription

let package = Package(
    name: "xProcs",
    products: [
        // Products define the executables and libraries produced by a package, and make them visible to other packages.
        .library(

stefc

import XCTest
import xProcs

class IntTests: XCTestCase {

    func testIntPow() {
        XCTAssertEqual(IntPow(5, exp: 2), 25)
        XCTAssertEqual(IntPow(5, exp: 1), 5)
        XCTAssertEqual(IntPow(5, exp: 0), 1)
    }

stefc

import Foundation

public func IntPow(_ base: Int, exp: Int) -> Int {
    guard exp >= 0 else {
        return 0
    }
    guard exp > 0 else {
        return 1
    }
    return (1..<exp).reduce(base) { (accu, _) in accu * abs(base) }