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What’s Next for Gitlab CI: Auto DevOps
GitLab first became the standard for self hosting git with two-thirds of the market, then became the next generation CI system, and the next step is creating Auto DevOps.
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Migrating from RethinkDB to Postgres – An Experience Report
Note: This post and our new engineering blog can be found at lumi.dev
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Exploring the BBC Micro:bit Software Stack and OS
If you grew up in the UK and went to school during the 1980’s or 1990’s there’s a good chance that this picture brings back fond memories:
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GUI Architectures (2006)
Describing the way architectures for UIs have evolved over the years, in particular the many and often misunderstood definitions for Model-View-Controller.
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Reverse Engineering an Eclipse Plugin
Introduction Firstly I want to note I’m not a security researcher, ethical hacker or at all competent at reverse engineering. I’m currently working as a Java developer but I’ve al…
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Notes on Programming in C – Rob Pike (1989)
What follows is a set of short essays that collectively encourage a philosophy of clarity in programming rather than giving hard rules. I don't expect you to agree with all of them, because they are opinion and opinions change with the times. But they've been accumulating in my head, if not on paper until now, for a…
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Hey Siri: An On-Device DNN-Powered Voice Trigger for Apple’s Personal Assistant
The “Hey Siri” feature allows users to invoke Siri hands-free. A very small speech recognizer runs all the time and listens for just those…
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How (Not?) to Use Python’s List Comprehensions
Lesser known is that you can have nested list comprehensions, that handle nested for loops:
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DéjàVu: a map of code duplicates on GitHub
DéjàVu: A map of code duplicates on GitHub Lopes et al., OOPSLA ‘17 ‘DéjàVu’ drew me in with its attention grabbing abstract: This paper analyzes a corpus of 4.5 million non-fork projects hosted on…
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Introduction to Hierarchical State Machines
The formalism of Hierarchical State Machines (aka statecharts) makes the state machine approach truly applicable to real-life embedded systems. Read more.
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I cannot consistently write safe C/C++ code
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
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From AST to Lossless Syntax Tree
As noted in ASDL Implementation and Use Cases , I began with a simple AST interpreter for OSH, thinking that the two languages could share the same AST.
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An obscure research project could accelerate innovation in language design
An obscure research project could radically accelerate innovation in programming language design
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JavaScript Fatigue: Realities of Our Industry
Hot takes and cold truths on software, startups, and the lies we tell ourselves.
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Let’s Stop Ascribing Meaning to Code Points
Update: This post got a sequel, Breaking our latin-1 assumptions. I’ve seen misconceptions about Unicode crop up regularly in posts discussing it. …
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Jsonb: Stories about performance
As such, there’s really no “standard” benchmark that will inform you about the best technology to use for your application. Only your requirements, your data, and your infrastructure can tell you what you need to know.
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Introducing Qt 3D Studio
Explore the Qt Blog for the latest insights on e.g. Qt Creator, your go-to source for cross-platform development tips and updates.
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Crafting Interpreters: Classes
One has no right to love or hate anything if one has not acquired a thorough knowledge of its nature. Great love springs from great knowledge of the beloved object, and if you know it but little you will be able to love it only a little or not at all.
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Visualizing Your Ruby Heap
In a previous post, I wrote a bit about how Ruby objects are laid out in memory. Today we’ll use that information to write a program that will allow us to take a Ruby heap dump and visualize the layout and fragmentation of that heap. Ruby Object Layout Recap Just as a recap, Ruby objects are fixed width. That is…
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EmberConf 2017: State of the Union
Ember.js (or should we say Amber.js) turned five years old last December. In some ways, five years is a short amount of time. But when measured in web framework years, it...
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Datomic: this is not the history you're looking for
In this post, I'll describe some common pitfalls regarding the use of the 'time-travel' features of Datomic ( db.asOf() , db.history() , :db/txInstant ).
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Dolphin Progress Report: December 2016
We have celebrated the 15th anniversary of the GameCube and the 10th anniversary of the Wii in the last few months. As the Wii's successor, and the brand lineage, has been discontinued in the run-up to the release of the Switch, it is a time for reflection. But, this doesn't mean an end for the GameCube and Wii; if…
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Taking a Look at CLR Thread Pool 'Thread Injection' Algorithm
As part of a never-ending quest to explore the CoreCLR source code I stumbled across the intriguing titled ‘HillClimbing.cpp’ source file. This post explains what it does and why.
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68 things the CLR does before executing a single line of your code
Because the CLR is a managed environment there are several components within the runtime that need to be initialised before any of your code can be executed. This post will take a look at the EE (Execution Engine) start-up routine and examine the initialisation process in detail.
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When I use classes, when I don’t, what I do instead and why
When I use classes, when I don't, what I do instead, and why
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