Daniel Lemire

FEBRUARY 8, 2019

I believe that all optimizing C/C++ compilers know how to pull this trick and it is generally beneficial irrespective of the processor’s architecture. In concrete terms, here is the C code to compute the remainder of the division by some fixed divisor d : uint32_t d =. ; // your divisor > 0. count5 + = 1 ; }.

C++ 279

C++ Benchmarking Hardware Testing 279

DZone

MAY 15, 2021

Cross-browser testing has become an integral part of the test process to ensure the product experience and behavior remain consistent across different combinations of web browsers, devices, and operating systems. This is where a parameterized test can be beneficial as it enables testing the code/methods against different input values.

Testing 227

Testing Operating System Code Processing 227

O'Reilly

OCTOBER 12, 2021

Kevlin Henney and I were riffing on some ideas about GitHub Copilot , the tool for automatically generating code base on GPT-3’s language model, trained on the body of code that’s in GitHub. First, we wondered about code quality. We know how to test whether or not code is correct (at least up to a certain limit).

Code 144

Code Programming C++ Testing 144

Sutter's Mill

JUNE 17, 2023

Minutes ago, the ISO C++ committee finished its meeting in-person in Varna, Bulgaria and online via Zoom, where we formally began adopting features into C++26. For example, the feature freeze for C++23 was in early 2022. Already in C++23] Rule 2. You can find a brief summary of ISO procedures here. New] Rule 3.

C++ 140

C++ Programming Tuning Design 140

Brendan Gregg

OCTOBER 28, 2024

The green frames are the actual instructions running on the AI or GPU accelerator, aqua shows the source code for these functions, and red (C), yellow (C++), and orange (kernel) show the CPU code paths that initiated these AI/GPU programs. It's designed to be easy and low-overhead , just like a CPU profiler.

Programming 130

Programming Hardware Tuning C++ 130

CSS Wizardry

OCTOBER 16, 2023

Concatenate Concatenation is probably the trickiest bit to get right because, even though the three C s happen in order, decisions we make later will influence decisions we make back here. In one test, I concatenated it all into one big file, and the other had the library split into 12 files. Read the complete test methodology.

Cache 353

Cache Latency Strategy Speed 353

Nick Desaulniers

MAY 12, 2019

Prefer f(void) in C to potentially save a 1B instruction per function call when targeting x86_64 as a micro-optimization. Doesn’t matter for C++. While messing around with some C code in godbolt Compiler Explorer , I kept noticing a particular funny case. For example, the following C code: 1. The Problem.

C++ 111

C++ Code Testing 111

Sutter's Mill

NOVEMBER 11, 2023

Today, the ISO C++ committee completed its second meeting of C++26, held in Kona, HI, USA. Our hosts, Standard C++ Foundation and WorldQuant, arranged for high-quality facilities for our six-day meeting from Monday through Saturday. This time, the committee adopted the next set of features for C++26. This is that library.

C++ 130

C++ Lambda Network Programming 130

DZone

NOVEMBER 9, 2021

It sits at the very beginning of the process before the code is written and can save an immense amount of time down the road (of somebody spending tons of time just to get to a dead-end). I really like what one of the smartest people with whom I worked said: “A good design is a design where you can see the code”. Important note.

Software 245

Software Software Code Design 245

Sutter's Mill

OCTOBER 9, 2023

At CppCon 2022, I argued for why we should try to make C++ 10x simpler and 50x safer , and this update is an evolution of the update talk I gave at C++ Now in May, with additional news and demos. No one else has tried the TypeScript plan for C++ yet, and I see value in trying it, and so that’s the plan I’m following for cppfront.

C++ 109

C++ Code Programming Design 109

Adrian Cockcroft

JANUARY 27, 2025

My homebrew phone project was abandoned and I started to learn Objective C and Apples mobile app development tooling. This was all a spare time project, as my day job at Netflix at that time was as a director level manager of a team working on personalization code in Java, and it wasnt my job to write the codemyself.

C++ 88

C++ Mobile Hardware Java 88

Dynatrace

NOVEMBER 18, 2020

With the help of open-source solutions and agile APIs, teams can now deliver and maintain code more efficiently than ever. ” where code is kicked back to developers for revision if it doesn’t meet operational requirements, often without clear direction on what needs to happen or why. Solving for silos. Operational impact.

DevOps 283

DevOps Infrastructure Open Source Software 283

Dynatrace

JUNE 1, 2022

As a result, C-level executives say that cloud environments have bolstered cybersecurity challenges. Further, software development in multicloud environments introduces multiple coding languages and third-party libraries. Many of these libraries have not been adequately tested before deployment.

Artificial Intelligence 245

Artificial Intelligence Java Cloud Strategy 245

Dynatrace

MARCH 17, 2021

Application security is a software engineering term that refers to several different types of security practices designed to ensure applications do not contain vulnerabilities that could allow illicit access to sensitive data, unauthorized code modification, or resource hijacking. Application security tests and what they do.

Open Source 242

Open Source Cloud Games Java 242

O'Reilly

FEBRUARY 13, 2025

When I started working on the new edition of Head First C# back in 2023, AI tools like ChatGPT and Copilot were already changing how developers write and learn code. But the audience for the booka developer learning C# as their first, second, or third languagedoesnt yet have these skills.

C++ 69

C++ Code Design Media 69

Dynatrace

DECEMBER 8, 2020

Teams are embracing new technologies and continuously deploying code. In addition, c loud – native environments with containers, microservices, and platforms like Kubernetes are highly dynamic. Dynatrace provides the C-suite with confidence about the security of their cloud-native ecosystem.

Cloud 306

Cloud Open Source Internet Internet 306

O'Reilly

DECEMBER 10, 2024

That seemed like something worth testing outor at least playing around withso when I heard that it very quickly became available in Ollama and wasnt too large to run on a moderately well-equipped laptop, I downloaded QwQ and tried it out. How do you test a reasoning model? But thats hardly a valid test. Can we go further?

C++ 102

C++ Design Google Games 102

Scalegrid

JULY 13, 2020

These new applications are a great way for enterprise companies to test out PostgreSQL before migrating their entire infrastructure. Oracle requires more complex ongoing administration, as all database configurations must evolve in conjunction with the data schemas and custom code. Objective C. SolarisUnix. Supported Languages.

Open Source 244

Open Source C++ Tuning Database 244

DZone

JANUARY 3, 2020

Debugging is not just about the fix — sometimes it's the drudgery of trying to locate the root cause that kills passion, especially when you have thousands or even millions of lines of code. Find out that his fix causes 100~1000 failed tests. Randomly pick some of the tests and dive into the code again.

C++ 162

C++ Code Database Testing 162

O'Reilly

FEBRUARY 11, 2025

Submit a proposal for a talk at our new virtual conference, Coding with AI: The End of Software Development as We Know It.Proposals must be submitted by March 5; the conference will take place April 24, 2025, from 11AM to 3PM EDT. AI writes buggy code? So do humansand AI seems to be getting better at writing correct code.

Programming 93

Programming Code Software Software 93

The Netflix TechBlog

NOVEMBER 9, 2022

A quick canary test was free of errors and showed lower latency, which is expected given that our standard canary setup routes an equal amount of traffic to both the baseline running on 4xl and the canary on 12xl. Armed with this knowledge, we used Intel vTune to run microarchitecture profiling.

Hardware 363

Hardware Cache Performance Latency 363

Dynatrace

MAY 23, 2022

Shifting from monolith to microservices makes it easier to test, develop, and release innovative features more rapidly. IDC predicted, by 2022, 90% of all applications will feature microservices architectures that improve the ability to design, debug, update, and use third-party code. Easier to test. Better testing.

Architecture 263

Architecture DevOps Monitoring Programming 263

O'Reilly Software

MAY 11, 2019

TL;DR Prefer f(void) in C to potentially save a 2B instruction per function call when targeting x86_64 as a micro-optimization. Doesn’t matter for C++. The Problem While messing around with some C code in godbolt Compiler Explorer, I kept noticing a particular funny case. Wstrict-prototypes can help.

C++ 76

C++ Code Testing 76

Smashing Magazine

JULY 1, 2021

It’s A (Front-End Testing) Trap! Six Common Testing Pitfalls And How To Solve Them. It’s A (Front-End Testing) Trap! Six Common Testing Pitfalls And How To Solve Them. All right, but what does this have to do with testing? Well, it’s simply an apt allegory when it comes to dealing with tests in a code base.

Testing 137

Testing Best Practices Code Design 137

CSS Wizardry

NOVEMBER 3, 2020

Any time you run a test with WebPageTest, you’ll get this table of different milestones and metrics. Note the bottom row shows me the Standard Deviation of the tests’ results. I want to be able to form hypotheses and draw conclusions without viewing a single URL or a line of source code. Gathering Data. Final Word.

Speed 337

Speed Ecommerce Metrics Analytics 337

Sutter's Mill

JULY 13, 2019

More about that in the post-meeting trip report after the meeting is over… FAQs (As of pre-Cologne, July 2019) There are bugs in the standard, so should we delay C++20? If we had just another meeting or two, we could add <feature> which is almost ready, so should we delay C++20? Of course, and no. Of course, and no.

C++ 98

C++ Entertainment Education Azure 98

Smashing Magazine

JULY 19, 2021

Maintaining End-To-End Quality With Visual Testing. Maintaining End-To-End Quality With Visual Testing. Testing is a critical part of any developer’s workflow. But often automated tests can be a pain to manage. A Quick Look At Some Of The Types Of Automated Testing. Colby Fayock. 2021-07-19T10:30:00+00:00.

Testing 144

Testing Code Design Strategy 144

Sutter's Mill

JULY 29, 2024

Safety and simplicity are the two core things I want to try to dramatically improve in C++, and are why I’m doing my cppfront experiment, so although the above absorbed some time away from cppfront coding it all contributes to the same goal. (If Support all C++23 and draft C++26 headers that have feature test flags.

C++ 116

C++ Lambda Code Open Source 116

The Netflix TechBlog

JANUARY 24, 2022

Why do we run Performance Tests on commits? It’s harder to reason about the performance profile of pre-production code since we can’t gather real-time metrics for code that hasn’t yet shipped. By running performance tests against every commit (pre- and post-merge), we can detect potentially regressive commits earlier.

Performance 208

Performance Performance Testing Metrics Testing 208

O'Reilly

FEBRUARY 25, 2025

On April 24, OReilly Media will be hosting Coding with AI: The End of Software Development as We Know It a live virtual tech conference spotlighting how AI is already supercharging developers, boosting productivity, and providing real value to their organizations. You can find more information and our call for presentations here.

Code 74

Code Programming Servers Cloud 74

Dynatrace

APRIL 11, 2023

For example, the open source Java library at the heart of the Log4Shell crisis in 2021 was patched within days given the pervasiveness of the code. How vulnerabilities are evaluated – platform module Learn the mechanism that Dynatrace Application Security uses to generate third-party vulnerabilities and code-level vulnerabilities.

Cloud 246

Cloud DevOps Open Source Retail 246

The Netflix TechBlog

MARCH 2, 2021

We use A/B tests to introduce new product features, such as our daily Top 10 row that help our members discover their next favorite show. David Cameron (Studio Production) [David C.] Coding with statistical software and SQL are my most widely used technical skills. Learning through data is in Netflix’s DNA.

Analytics 216

Analytics C++ Innovation Engineering 216

Testlodge

AUGUST 9, 2023

Basis path testing in software testing is a white box method where the tester examines the codebase to identify all possible paths that could be taken by the user to achieve their aims. These paths are then written as test cases to ensure all the different identified scenarios in the main branches are covered.

Testing 75

Testing Software Software C++ 75

The Netflix TechBlog

MARCH 13, 2020

SVT-AV1 codebase status The SVT-AV1 repository includes both an AV1 encoder and decoder, which share a significant amount of the code. SVT-AV1 is written in C and can be compiled on major platforms, such as Windows, Linux, and macOS. Since all sequences in the objective-1-fast test set have 60 frames, both codecs use one key frame.

Open Source 159

Open Source Efficiency C++ Speed 159

O'Reilly

JANUARY 9, 2024

Kevlin Henney and I recently discussed whether automated code generation, using some future version of GitHub Copilot or the like, could ever replace higher-level languages. As coding assistants become more accurate, it seems likely to assume that they will eventually stop being “assistants” and take over the job of writing code.

Programming 139

Programming C++ Code Operating System 139

SQL Performance

MARCH 10, 2021

I’ll do my testing in tempdb, enabling time statistics: SET NOCOUNT ON ; USE tempdb ; SET STATISTICS TIME ON ; Earlier ideas. Here’s the code to create the dummy table: DROP TABLE IF EXISTS dbo. As a reminder, this solution uses a join with a dummy table that has a columnstore index to get batch processing. BatchMe ; GO.

C++ 134

C++ Testing Code Servers 134

The Netflix TechBlog

APRIL 17, 2019

Reference software serves as the basis for standard development, a framework, in which the performance of video coding tools is evaluated. However, rav1e is written in Rust programming language, whereas an encoder written in C has a much broader base of potential developers. Added a unit tests framework based on Google Test.

Open Source 167

Open Source Scalability Speed Efficiency 167