tonivade

sealed interface Data<T> {

  record DataString(String value) implements Data<String> {}

  static <T> T get(Data<T> data) {
    // why I need to force the cast to T?
    return (T) switch (data) {
        case DataString(var value) -> value;
    };
  }

tonivade

import java.util.function.BiFunction;
import java.util.function.Function;

public interface Bug<T> {

  <R> Bug<R> map(Function<? super T, ? extends R> mapper);

  <R> Bug<R> ap(Bug<Function<? super T, ? extends R>> apply);

  static <A, B, C> Function<BiFunction<A, B, C>, Bug<C>> compile(Bug<? extends A> fa, Bug<? extends B> fb) {

tonivade

import java.util.function.Supplier;

public record Bug(int value) {

	static void bug(Supplier<String> str) {
		System.out.println(str.get());
	}

	public Bug {
		bug(() -> "hello");

tonivade

import static java.util.Objects.requireNonNull;

public class Builder {

  public static void main(String[] args) {
    User user = User.builder().id(1).name("toni").email("toni@home").build();

    System.out.println(user);
  }
}

tonivade

//usr/bin/env jbang "$0" "$@" ; exit $?

//JAVA 21

//JAVAC_OPTIONS --enable-preview -source 21
//JAVA_OPTIONS --enable-preview

//DEPS com.github.tonivade:purefun-typeclasses:5.0
//DEPS com.github.tonivade:purefun-instances:5.0
//DEPS com.github.tonivade:purefun-transformer:5.0

tonivade

import java.util.function.Function;
import java.util.function.Supplier;

public class Main {
  public static void main(String args[]) {
    var some = new Some<>("hello");

    var result = some.map(String::toUpperCase);

    System.out.println(result.orElse(""));

tonivade

/*
 * Copyright (c) 2018-2019, Antonio Gabriel Muñoz Conejo <antoniogmc at gmail dot com>
 * Distributed under the terms of the MIT License
 */
package com.github.tonivade.purefun.zio;

import static com.github.tonivade.purefun.monad.Console.println;
import static org.junit.jupiter.api.Assertions.assertEquals;

import java.io.BufferedReader;

tonivade

import static com.github.tonivade.purefun.data.Sequence.listOf;
import static java.util.Objects.requireNonNull;
import static org.junit.jupiter.api.Assertions.assertEquals;

import org.junit.jupiter.api.Test;

import com.github.tonivade.purefun.Higher1;
import com.github.tonivade.purefun.Kind;
import com.github.tonivade.purefun.Tuple2;
import com.github.tonivade.purefun.Unit;