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This video highlights many of the strange issues underlying MySQL - and how those problems are handled by Postgres. Our goal is to answer the question: “Why Postgres and not MySQL?”. This is episode 2 of Tekpub’s Hello Postgres production - given to the community for free.

Copy constructors sounds like a topic for an article from 1989. And yet, the changes in the new C++ standard affect the design of a class’ special member functions fundamentally. Find out more about the impact of move semantics on objects’ behavior and learn how to implement the move constructor and the move assignment operator in C++11.

jemalloc is a general-purpose scalable concurrent malloc(3) implementation.

Appropedia is for collaborative solutions in sustainability, appropriate technology and poverty reduction.

Bfxr is an elaboration of the glorious Sfxr, the program of choice for many people looking to make sound effects for computer games.

Bloom is a language …

… for disorderly distributed programming because order is expensive

… with powerful consistency analysis CALM guidance on coordination

… and concise, familiar syntax based on data-centric languages

Boomerang is a programming language for writing lenses—well-behaved bidirectional transformations—that operate on ad-hoc, textual data formats. Every lens program, when read from left to right, describes a function that maps an input to an output; when read from right to left, the very same program describes a “backwards” function that maps a modified output, together with the original input, back to a modified input.

Lenses have been used to solve problems across a wide range of areas in computing including: in data converters and synchronizers, in parsers and pretty printers, in picklers and unpicklers, in structure editors, in constraint maintainers for user interfaces, in software model transformations, in schema evolution, in tools for managing system configuration files, and in databases where they provide updatable views.

SlimBatteryMonitor is a replacement power gauge for Apple’s Mac OS X that tracks both laptop batteries and many UPS batteries. Multiple-battery systems (e.g. older powerbooks) are supported as well. A graphical icon shows the power remaining, and can be accompanied by a text description (battery charge in percent, or time remaining). Colours can indicate whether the system is fully charged, charging or on battery.

Trim is must-have feature for most Solid State Drives. It not only increases data writing speeds, but it increases the lifetime of the SSD itself. With Trim Enabler, you can bring that feature to Mac OSX. It’s as easy as flipping a switch.

Trim Enabler can also analyze your drive and show information about it’s health and show lifetime statistics.

Linq for list comprehension in C++, provides an implementation of linq for C++. Currently it only supports C++ ranges, but it does support both the extension and query methods for linq.

Mx is a highly expressive constraint-based music composition system that transforming a high-level representation of musical structure into a MIDI file.

TypeRex is a powerful development environment for OCaml. It is designed to integrate easily in your favorite editor, and to provide all the commands that programmers expect from a modern IDE. TypeRex is open-source and is developed by OCamlPro and INRIA.

utop is an improved toplevel for OCaml. It can run in a terminal or in Emacs. It supports line edition, history, real-time and context sensitive completion, colors, and more.

It integrates with the tuareg and typerex modes in Emacs.

Spire is a numeric library for Scala which is intended to be generic, fast, and precise.

Using features such as specialization, macros, type classes, and implicits, Spire works hard to defy conventional wisdom around performance and precision trade-offs. A major goal is to allow developers to write efficient numeric code without having to “bake in” particular numeric representations. In most cases, generic implementations using Spire’s specialized type classes perform identically to corresponding direct implementations.

I post something and my followers see it. That’s the rough idea behind the pump.

There’s an API defined in the API.md file. It uses activitystrea.ms JSON as the main data and command format.

You can post almost anything that can be represented with activity streams – short or long text, bookmarks, images, video, audio, events, geo checkins. You can follow friends, create lists of people, and so on.

The software is useful for at least these scenarios:

• Mobile-first social networking
• Activity stream functionality for an existing app *Experimenting with social software

This project aims to contain several definitions of common node.js libraries for TypeScript language in order to have autocomplete support.

It would be great if the creators of node modules, include definition files directly on their projects. In the meanwhile this project will do the job.

The RoboVM compiler translates Java bytecode into native ARM or x86 code. Apps run directly on the CPU. No interpreter or virtual machine involved.

Roy is an experimental programming language that targets JavaScript. It tries to meld JavaScript semantics with some features common in static functional languages:

• Damas-Hindley-Milner type inference
• Whitespace significant syntax
• Compile-time meta-programming
• Simple tagged unions
• Pattern matching
• Structural typing
• Monad syntax

Knockout is a JavaScript library that helps you to create rich, responsive display and editor user interfaces with a clean underlying data model. Any time you have sections of UI that update dynamically (e.g., changing depending on the user’s actions or when an external data source changes), KO can help you implement it more simply and maintainably.

Headline features:

• Elegant dependency tracking - automatically updates the right parts of your UI whenever your data model changes.
• Declarative bindings - a simple and obvious way to connect parts of your UI to your data model. You can construct a complex dynamic UIs easily using arbitrarily nested binding contexts.
• Trivially extensible - implement custom behaviors as new declarative bindings for easy reuse in just a few lines of code.

Reflex is a ClojureScript library for automatic state propagation. Intrinsic application state lives in atoms, from which derived values can be computed using Reflex-provided “computed observables” (COs). COs always reflect the latest state, can depend on multiple atoms, and are themselves watchable (i.e., you can chain them). COs are lazily evaluated, computing state only when they are dereferenced—they will notify their watches when they become dirty, but will not pass any values.