alexandreaquiles

import java.util.Iterator;

public class FibonacciSequence implements Iterator<Long> {
  private long n = 0;
	private long a = 0;
	private long b = 1;
	public boolean hasNext() { return a + b > 0; }
	public Long next() {
		long fib;
		if(n == 0 || n == 1) {

alexandreaquiles

import fj.F2;
import fj.data.List;
import fj.data.Stream;

public class FunctionalJavaFibonacci {
	
	public static final Stream<Long> fibonacciSequence = new F2<Long, Long, Stream<Long>>() {
	      public Stream<Long> f(final Long a, final Long b) {
	        return Stream.cons(a, curry().f(b).lazy().f(a + b));
	      }

alexandreaquiles

import static com.googlecode.totallylazy.Callables.first;
import static com.googlecode.totallylazy.Computation.computation;
import static com.googlecode.totallylazy.Pair.reduceLeftShift;

import com.googlecode.totallylazy.Pair;
import com.googlecode.totallylazy.Sequence;
import com.googlecode.totallylazy.numbers.Sum;

public class TotallyLazyFibonacci {
  

alexandreaquiles

@Controller
class TarefasController {

        //restante omitido - mas não remova!

	@RequestMapping("tarefa/listaAjax")
	public @ResponseBody List<Tarefa> listaAjax() {
		JdbcTarefaDao dao = new JdbcTarefaDao();
		return dao.lista();
	}

alexandreaquiles

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>br.com.caelum</groupId>
	<artifactId>projetao</artifactId>
	<packaging>war</packaging>
	<version>1.0-SNAPSHOT</version>
	<name>Projetao Spring MVC</name>

	<dependencies>

alexandreaquiles

<!-- no diretorio de instalacao do Tomcat -->

  <Resource name="jdbc/dataSource" auth="Container" type="javax.sql.DataSource"
            maxActive="100" maxIdle="30" maxWait="10000"
            username="root" password=""
            driverClassName="com.mysql.jdbc.Driver"
            url="jdbc:mysql://localhost/fj21"/>

alexandreaquiles

Dependência é o principal problema em desenvolvimento de software. Duplicação é o sintoma.

Mas, ao contrário da maioria dos problemas na vida, nos quais eliminar os sintomas faz com que um problema mais grave apareça em outro lugar, eliminar duplicação nos programas elimina dependência.

Kent Beck, em TDD by Example

http://alexandreaquiles.com.br/2010/08/17/63/

alexandreaquiles

package hora;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

alexandreaquiles

package hora;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

alexandreaquiles

package hora;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.TimeZone;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;