I did learn many of these at university, but either didn’t fully understand them or forgot due to lack of practice. Using it at work was a game changer! — For many of us in the field of computer science, our early education in this area starts with the concept of big O or big Omega(Ω). Big O is used in computer science to describe the performance or complexity of an algorithm. Big O is used to describe the worst…

Writing high-performance code often comes at a cost of reduced portability and simplicity —Halide fixed that and we use it often at Google. — Introduction Halide is an open-source programming language designed to make it easier to write and maintain high-performance image processing or array processing code on modern machines. Halide currently targets Different CPUs Different Operating Systems Diff compute APIs like CUDA, OpenCL, OpenGL, etc.

Different approaches to reading any file directly in the native layer in Android — Software development in Android can be done using the Java SDK or Native Development Kit, aka NDK, made available by Android Open Source Project (AOSP). NDK is often used for writing high-performance code like image processing algorithms. Many apps have requirements to read files from disk. For reading image files…

Learn how to use torch with Javascript QR scanning library on Smartphones or enabling torch with camera in general using JS. html5-qrcode is a fairly used open source library for implementing QR Code or Bar-Code scanner in a web application. It has 400K+ downloads on Github and going around 31K…

A question for everyone to explain issues with floating point comparison — that one needs to be careful about. — The problem above is 5% math, 5% C++ and 90% associated with nuances of floating point computation in major programming languages. Before going into the theory let’s try this empirically. I wrote a mini program to test this out 10 million times (just to be sure).

It was surprisingly easy to achieve this with minimal errors using Google’s tech! I’ve been actively writing on medium for a while now and ideally I use my multi-monitor set up with a mechanical keyboard + gaming mouse for writing, editing and publishing and related purposes.

Why working on cloud vs. mobile (Edge) is so different? — I recently hit my third work anniversary at Google! It was on the 21st of May. I had a couple of colleagues and my wife congratulating me for this. That made me wonder if this is really something that deserves praise. Somewhere down the line, it took me on a…

Google sheet has easy macros to get price of US stocks and currency, but not for gold or silver. Here’s easy & free trick to get latest prices! I use Google Sheets for tracking my expenses, assets, and liabilities. Google Sheet has first-class support for querying the latest values of…

I have written about how Halide allows us to write both fast and maintainable code. This one will show its power with Android applications. — Halide is an open-source domain specific language designed to make it easier to write and maintain high-performance image processing or array processing code on modern machines. I have been writing a series on Halide and this article is 3rd one in the series. In the last two articles, I talked…