jaymoid

{-# LANGUAGE InstanceSigs #-}

module WriteStateForYourself where

import Test.Hspec (describe, hspec, shouldBe, it)
import Test.QuickCheck.Classes (functor, applicative, monad)
import Test.Hspec.Checkers (testBatch)
import Test.QuickCheck (Arbitrary(..), CoArbitrary(..))
import Test.QuickCheck.Checkers (EqProp(..))
import Text.Show.Functions () -- For generating instances of show for functions

jaymoid

Some Recommended Kotlin Resources

Books

Kotlin Programming: The Big Nerd Ranch Guide
Josh Skeen, David Greenhalgh
First on the list for a reason.

This is the most well-rounded Kotlin book I have come across. It was written by teachers, has exercises at the end of chapters, recommendations for clean/idiomatic code, and doesn't lend on prior Java knowledge. Additionally it was released in 2018 so it includes more of the recent language features.
Safari

jaymoid

import kotlin.math.abs

data class Player(val name: String, var points: Int = 0)

class TennisGameKotlin(player1Name: String, player2Name: String) : TennisGame {
    private val player1 = Player(player1Name)
    private val player2 = Player(player2Name)
    private val scores = listOf("Love", "Fifteen", "Thirty", "Forty")

    override fun wonPoint(player: String) =

jaymoid

package diamond

import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.DisplayName
import org.junit.jupiter.api.Test
import java.lang.System.lineSeparator

@DisplayName("Diamond Kata Tests")
class DiamondTest {

jaymoid

Leeds Code Dojo Strong Pair Programming, Diamond Kata

(Extended/Inspired from Seb Rose's Diamond kata at http://cyber-dojo.org/ )

1. Sparkly Diamonds (New to the code dojo / programming?)

Given a number, print a diamond made up of asterisks (*)

The number passed to your function indicates the number of rows of stars to print until it reaches the widest point of the diamond.

jaymoid

import java.util.Comparator;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertTrue;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.lessThan;

/**