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import java.util.Arrays; | |
import java.util.Collection; | |
import java.util.List; | |
import java.util.Optional; | |
import java.util.function.Consumer; | |
import java.util.function.Function; | |
import java.util.stream.Stream; | |
// Suppose we have an API where: | |
// - a Clazz has a List of Methods, |
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$ cat Printf.java | |
public class Printf { | |
public static void main(String[] args) { | |
System.out.println("Locale.getDefault()=" + java.util.Locale.getDefault()); | |
System.out.printf("%.3f%n", 123.45); | |
} | |
} | |
$ javac Printf.java | |
$ java -version |
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package com.kenfogel.performance.loaders; | |
import java.util.*; | |
import java.util.concurrent.TimeUnit; | |
import org.openjdk.jmh.annotations.*; | |
/** | |
* Performs a set of tests to determine the Big-O performance of an array list, array deque, | |
* and linked list. | |
* |
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import java.util.*; | |
import java.util.function.*; | |
import java.util.stream.*; | |
import static java.util.stream.Collectors.*; | |
import static java.util.Comparator.*; | |
/** | |
* http://stackoverflow.com/questions/22845574/how-to-dynamically-do-filtering-in-java-8 | |
* |
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import java.util.function.IntFunction; | |
import java.util.stream.IntStream; | |
public class FizzBuzz { | |
static <R> IntFunction<R> ifmod(int m, R r, IntFunction<R> f) { | |
return (int i) -> (i % m == 0) ? r : f.apply(i); | |
} | |
public static void main(String[] args) { | |
IntStream.rangeClosed(1, 100) |
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