danveloper

Optimization Question

Does JavaScript optimize for a function that is defined within the context of another function?

For example, are the following examples canonically represented (in performance terms) after compilation, or is one approach favored optimally over the other?

Inner-function

function sortMyThings() {

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for i in $(seq 1 1000); do bash -c "time dig @8.8.8.8 redhat.com>/dev/null &"; done 2>&1 | grep "^real" | grep -v "0m0"

danveloper

import com.google.inject.Inject
import com.google.inject.Scopes
import org.reactivestreams.Publisher
import ratpack.exec.ExecController
import ratpack.form.Form
import ratpack.func.Function
import ratpack.groovy.Groovy
import ratpack.guice.Guice
import ratpack.server.RatpackServer
import ratpack.server.ServerConfig

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package app;

import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.GenericBeanDefinition;
import org.springframework.boot.SpringApplication;
import org.springframework.http.MediaType;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.http.server.ServletServerHttpResponse;
import org.springframework.web.servlet.ModelAndView;

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  public static void main(String[] args) throws Exception {
    EventLoopGroup elg = new NioEventLoopGroup();
    Bootstrap b = new Bootstrap()
        .group(elg)
        .channel(NioSocketChannel.class)
        .option(ChannelOption.SO_KEEPALIVE, true)
        .handler(new ChannelInitializer<SocketChannel>() {
          @Override
          protected void initChannel(SocketChannel ch) throws Exception {
            ch.config().setAutoRead(false);

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starting the app

* app starts with `-Dratpack.epoll=true` to enable the Netty `EpollEventLoop`

# ./wrk -t72 -c3000 -d30s http://localhost:5050
Running 30s test @ http://localhost:5050
  72 threads and 3000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     4.82ms    9.03ms 229.22ms   95.25%
    Req/Sec     9.58k     3.52k   34.54k    70.33%

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@GrabResolver(name='netty', root='http://clinker.netty.io/nexus/content/repositories/snapshots')
@Grab('io.ratpack:ratpack-groovy:0.9.13-SNAPSHOT')
import ratpack.handling.Handler
import ratpack.server.*

RatpackServer.of { spec -> spec
  .config(ServerConfig.noBaseDir())
  .handler {
    { ctx -> ctx.render "Hello World!" } as Handler
  }

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build.gradle

buildscript {
  repositories {
    jcenter()
    maven { url "http://oss.jfrog.org/oss-snapshot-local" }
    maven { url "http://clinker.netty.io/nexus/content/repositories/snapshots" }
  }
  dependencies {

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@RequestMapping(value = "/{id}", method = RequestMethod.PUT)
public HttpEntity update(@PathVariable String id, HttpServletRequest request) throws IOException {
    ProductDetail existing = find(id);
    ProductDetail updated = objectMapper.readerForUpdating(existing).readValue(request.getReader());
    
    MutablePropertyValues propertyValues = new MutablePropertyValues();
    propertyValues.add("productId", updated.getProductId());
    propertyValues.add("productName", updated.getProductName());
    propertyValues.add("shortDescription", updated.getShortDescription());
    propertyValues.add("longDescription", updated.getLongDescription());

danveloper

// Reference to ArrayList type
var List = Java.type("java.util.ArrayList");

// An interface that provides default implementations for java.util.function.{Consumer,Function}
var ConsumingFunction = Java.type("midwestjs.nashorn.ConsumingFunction");

// Convert appropriately
function toFunc(fn) {
    return new ConsumingFunction() {
        apply: function(a) {