jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

pcolby

QVariantMap xmlStreamToVariant(QXmlStreamReader &xml, const QString &prefix = QLatin1String("."), const int maxDepth = 1024)
{
    if (maxDepth < 0) {
        qWarning() << QObject::tr("max depth exceeded");
        return QVariantMap();
    }

    if (xml.hasError()) {
        qWarning() << xml.errorString();
        return QVariantMap();

bkaradzic

Orthodox C++

What is Orthodox C++?

Orthodox C++ (sometimes referred as C+) is minimal subset of C++ that improves C, but avoids all unnecessary things from so called Modern C++. It's exactly opposite of what Modern C++ suppose to be.

Why not Modern C++?

chrisdone

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel

bryc

raphendyr

Google Play Services for AppSupport in Sailfish OS

This guide is currently updated to Sailfish 4.6. Some things have changed, so check the history if you need guide for an older version.

Devices I have tested the guide:

• Xperia 10 II
• Currently not working: Xperia XA2

Requirements

911992

%:include <stdio.h>

main(void) ??<
	char _vls<:4:>=<%1,3,5,7%>;
	printf("val:%d ??/n", 1??(_vls??) );
??>
/*
Above code equals to following code.
Prints 3.
*/

raysan5

CUSTOM GAME ENGINES: A Small Study

A couple of weeks ago I played (and finished) A Plague Tale, a game by Asobo Studio. I was really captivated by the game, not only by the beautiful graphics but also by the story and the locations in the game. I decided to investigate a bit about the game tech and I was surprised to see it was developed with a custom engine by a relatively small studio. I know there are some companies using custom engines but it's very difficult to find a detailed market study with that kind of information curated and updated. So this article.

Nowadays lots of companies choose engines like Unreal or Unity for their games (or that's what lot of people think) because d

thebluefish

use bevy::{prelude::*, asset::LoadState};

fn main() {
    App::build()
        .add_resource(GameState::Loading)
        .add_resource(PendingAssets(Vec::new()))
        .add_plugins(DefaultPlugins)
        .add_startup_system(load_some_assets.system())
        .add_system(loading.system())
        .add_system(loaded.system())

akihikodaki

Linux Desktop on Apple Silicon in Practice

I bought M1 MacBook Air. It is the fastest computer I have, and I have been a GNOME/GNU/Linux user for long time. It is obvious conclusion that I need practical Linux desktop environment on Apple Silicon.

Fortunately, Linux already works on Apple Silicon/M1. But how practical is it?

• Two native ports exist.