I really like using the array “.forEach” method but sometimes I need to quit early or continue to the next loop and don’

I always tell people, JavaScript classes are just constructor functions and prototypes under the hood. Is not a real concept like in Java. One way to prove it to just use a constructor function to extend a class. It comes in handy for private stuff which in class is weird with the whole “#” thing and it compiles to less code when used with babel or WebPack.

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f the American public simply cannot be reasonable about the topic of racism. When you look at society, it’s stunning how many topics are considered off limits. It is frowned upon to discuss how powerful members of the Catholic church covered up and enabled appalling acts of child rape. The world has been so corrupted, that when you take a hard line on that unforgivable action, many people will insist that you’re the one being inappropriate.

This executable includes the application classes, classes from its dependencies, runtime library classes, and statically linked native code from JDK. It does not run on the Java VM, but includes necessary components like memory management, thread scheduling, and so on from a different runtime system, called “Substrate VM”. Substrate VM is the name for the runtime components (like the deoptimizer, garbage collector, thread scheduling etc.).

A couple of amazing and very anticipated JavaScript features you must start using right now to solve commonly used hacks when it comes to deep checking object property and dealing with null and undefined values.

Java seems to be much more able to use multiple cores and execution threads provided by the hardware (compared to Go) — this makes some sense because Go is intended as a system and network programming language, and it is a younger language, so it is reasonable to assume that Java has had a lot more time to develop and tune optimizations

This is still very possible! But my thinking got thrown in a bit of a loop today when Apple announced the M1 was bound for not only the MacBook Pro, but the MacBook Air and Mac mini as well.³ So that’s Apple’s best-selling and cheapest portable, their best-selling professional portable, and their entry-level desktop machine. It’s a seemingly weird combination. Especially since they kicked off the M1 unveiling talking about how the chip was all about power efficiency and power-per-watt performance. That makes sense for the MacBook Air. It maybe makes sense for the MacBook Pro if these chips really are that fast. It seemingly makes less sense for the Mac mini, which, of course, is a plugged in device. But perhaps it has to do more with development for these new Macs and less for perfecting that particular system.

Matthew Panzarino quipped on Twitter that this M1 MacBook Pro is the new MacBook. And that may actually be correct. When we think about the MacBook now, we think of my beloved super-svelte device which was recently laid to rest. But that wasn’t always the case. For much of its life, the MacBook was actually in between the MacBook Air and the MacBook Pro in terms of size, specs, and price. What if this is a move back in that direction? Certainly it makes more sense from a branding perspective! The Air should be the thinnest and certainly the lightest MacBook. Duh.

In this case we did not see any substantial improvement in throughput or response time by using GraalVM native image over running the application on a JVM, however the memory footprint was smaller.

Logging seems to be a major performance hit, especially java.util.logging. Because of this, we ran tests with and without logging. We also noticed that logging was a significant factor in the performance of the Go applications.

The M1 MacBook Pro makes even more sense if it’s just the new “entry-level” MBP. That is, if Apple plans another, more powerful MacBook Pro model which will use a theoretical new chip that say, the iMac or even iMac Pro uses. Or maybe the Mac Pro?!

John Ternus, Apple’s VP of Hardware Engineering, the star of today’s show, noted that a “family of chips” were coming, and reiterated that this was just the first step in a transition that is going to take a couple of years. That implies either a different variant of the M1 or a different class of chip all together still yet to come...

We are comparing different execution models in this test — the Go application was compiled into a natively executable binary whereas the Java application was compiled into byte code that was then run on a virtual machine. We decided to introduce GraalVM native image so bring the Java application’s execution environment much closer to the Go application’s environment.

The best performance in this round was from GraalVM native image, with a 0.25 ms average response time and 82,426 transactions per second, compared to Go’s best result of 1.59 ms and 39,227 tps, however this was at the cost of two orders of magnitude more memory usage!

I had previously speculated about how Apple might handle their Mac-bound silicon, perhaps making an ‘A14T’ for the Macs.¹ Call it what you want, it sure sounds like it’s based on the A14 5nm architecture of the latest iPhones and iPads. The more interesting question I pondered is if that first iteration would be bound for MacBook Pros and iMacs,² while another new chip would be for the desktop-class ‘Pro’ Mac models.

Notice that in all three Java variants the first requests had much higher response times (look for that blue line right up against the left axis). In all cases we also saw some peaks, which we assume to be caused by garbage collections or optimizations.