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Engineering News

Red-tailed Hawk » Curious Cat Science and Engineering Blog

Backyard Wildlife: Red-tailed Hawk Posted on January 31, 2018  Comments (0) I see red-tailed hawks in my backyard occasionally. This one has a squirrel on a high tree branch in my backyard. The video shows it fly away. When I hear a murder of crows squawking loudly I often can spot a red-tailed hawk (or perhaps some other hawks) near my yard. Related: Backyard Wildlife: Sharpshinned Hawk – Red-shouldered Hawk – Backyard Wildlife: Fox – Backyard Wildlife: Blue Jay Source…

Sharing Code Between Web & Electron Apps

🎂 Path 1: The Shortcut Just load your remote web app into Electron, like a browser Photo by Dave Catchpole (CC BY 2.0) You scour the perimeter of the labyrinth, searching for the nearest entrance. As your eyes travel along the tiled, immaculate path, you notice that it continues, like a hallway, straight ahead without twist or turn. You spy an ornate, dazzling goblet, arrayed in jewels and gold, sitting atop a pedestal glinting off in the distance at the very end of…

NEAL, Uber’s Open Source Language-Agnostic Linting Platform

Every day, Uber’s engineers write hundreds of commits to our mobile codebase, with each new patch necessitating a thorough code review to spot bugs that might affect the user experience. To make code reviews easier, we built Not Exactly a Linter (NEAL), an open source language-agnostic tool that allows engineers to write custom syntax-based rules, thereby automating sections of the code review process. In this article, we discuss the benefits of NEAL and walk through how you can use it…

Letting molecular robots swarm like birds — ScienceDaily

A team of researchers from Hokkaido University and Kansai University has developed DNA-assisted molecular robots that autonomously swarm in response to chemical and physical signals, paving the way for developing future nano-machines. The world’s smallest “swarm robot” measures 25 nanometers in diameter and 5 micrometers in length, and exhibits swarming behavior resembling motile organisms such as fish, ants and birds. “Swarm robots are one of the most elusive subjects in robotics,” says Akira Kakugo of the research team at Hokkaido…

Steps to Buy Ethereum Cryptocurrency in India

Ethereum is a project that combines a digital currency, the Ether, like Bitcoin, but takes advantage of the possibilities offered by blockchain, an unalterable record that since the birth of Ethereum has been aimed at the creation of smart contracts. Smart contracts, as a rule, include a financial transaction, act transparently for both parties and their operation is very similar to the programming codes If they do that. All this information is reflected in the blockchain, an unalterable record where…

Improving Android video on News Feed with Litho | Engineering Blog | Facebook Code

As video consumption on mobile devices grows rapidly, Facebook mobile engineers are faced with new challenges for rendering content efficiently. Videos demand more resources than simpler UI elements like text and photos. They use decoders that keep the CPU busy; they allocate large amounts of memory to set up; and they use more network bandwidth to download video data from the servers. Playing videos inside a scrollable container like News Feed is especially challenging – pressure on the device’s resources…

Writing complex macros in Rust: Reverse Polish Notation

(This is a crosspost of a tutorial originally published on my personal blog) Among other interesting features, Rust has a powerful macro system. Unfortunately, even after reading The Book and various tutorials, when it came to trying to implement a macro which involved processing complex lists of different elements, I still struggled to understand how it should be done, and it took some time till I got to that “ding” moment and started misusing macros for everything 🙂 (ok, not…

Researchers develop wireless light switch for targeted cancer therapy

Researchers from the National University of Singapore developed a novel technology to wirelessly deliver light into deep regions of the body to activate light-sensitive drugs. This potentially enables photodynamic therapy to be used to treat a wider range of cancers, such as brain and liver cancer. Left to right: Assistant Professor John Ho and Professor Zhang Yong. Credit: National University of Singapore A team of scientists from the National University of Singapore (NUS) has developed a way to wirelessly deliver…

Getting Started Exploring SDKs with REPL-Driven Development in Node.js,

The faster it is to get up and running with an API the better. SDKs help speed up that on-boarding process by providing an already-written, pre-made API client that just works in the language you’re already using. The Square Connect API, for example, has SDKs in half a dozen languages. So how do we explore an SDK? One way is to take examples from the documentation, save them to file, then run them. That process works, but you can decrease…