stuart-marks

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
 * 

stuart-marks

import java.util.*;

public class EmptyFinalizer {
    static class A {
        protected void finalize() {
            System.out.println(this + " was finalized");
        }
    }

    static class B extends A {

stuart-marks

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)

stuart-marks

package com.example.readFile.readFileJava;

import java.io.BufferedReader;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.time.Duration;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Collections;

stuart-marks

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.
 *

stuart-marks

// https://twitter.com/stuartmarks/status/1304654956146745344

import java.lang.reflect.Field;

public class StillAlive {
    @SuppressWarnings("deprecation") // oh shut up
    static Boolean truе = new Boolean(true);

    static void WearMask() { }
    static void Stay6ftApart() { }

stuart-marks

--- ReadFileJavaApplicationBufferedReader5.java  2019-01-05 20:40:11.000000000 -0800
+++ ReadFileJavaApplicationBufferedReader6.java 2019-01-05 20:40:15.000000000 -0800
@@ -115,16 +115,9 @@
                }
        }
 
-       LinkedList<Entry<String, Integer>> list = new LinkedList<>(map.entrySet());
+         Entry<String, Integer> common = Collections.max(map.entrySet(), Entry.comparingByValue());
 
-       Collections.sort(list, new Comparator<Map.Entry<String, Integer> >() {

stuart-marks

--- ReadFileJavaApplicationBufferedReader4.java  2019-01-05 20:40:05.000000000 -0800
+++ ReadFileJavaApplicationBufferedReader5.java 2019-01-05 20:40:11.000000000 -0800
@@ -46,6 +46,8 @@
        ArrayList<String> firstNames = new ArrayList<>();
 
          var namePat = Pattern.compile(", \\s*([^, ]+)");
+         char[] chars = new char[6];
+         StringBuilder sb = new StringBuilder(7);
 
          System.out.println("Reading file using " + Caller.getName());

stuart-marks

--- ReadFileJavaApplicationBufferedReader3.java  2019-01-05 20:40:01.000000000 -0800
+++ ReadFileJavaApplicationBufferedReader4.java 2019-01-05 20:40:05.000000000 -0800
@@ -45,7 +45,7 @@
        Instant commonNameStart = Instant.now();
        ArrayList<String> firstNames = new ArrayList<>();
 
-         var namePat = Pattern.compile(", \\s*(([^ ]*), |([^ ]+))");
+         var namePat = Pattern.compile(", \\s*([^, ]+)");
 
          System.out.println("Reading file using " + Caller.getName());

stuart-marks

--- ReadFileJavaApplicationBufferedReader2.java
+++ ReadFileJavaApplicationBufferedReader3.java
@@ -44,6 +45,7 @@
        Instant commonNameStart = Instant.now();
        ArrayList<String> firstNames = new ArrayList<>();
 
+         var namePat = Pattern.compile(", \\s*(([^ ]*), |([^ ]+))");
 
          System.out.println("Reading file using " + Caller.getName());