The First Cry of Atom

If you are an expert in modern C++, you must be familiar with the move semantics of C++. Move semantics provides us a chance to improve the performance by eliminating the unnecessary copy of the object, introduced in C++11. If your code contains a large object and sees the time... [Read More]

You might have encountered a situation where you cannot build the latest Docker image when using the Buildx. If so, you may find this article helpful to give you a little insight into your question, “Why I keep seeing the stale image in the list!”. [Read More]

I recently tried to run Presto on Arm architecture system to evaluate how it can cost-effectively achieve faster performance as part of my work. Thanks to AWS, we can make use of server machines having Arm processors such as Graviton 1/2. We have succeeded in experimenting without having much difficulty.... [Read More]

Hey, this is a part of the series describing the situation where I encountered weird behavior in the programming :) Today is about Java. When I wrote a code to do bit manipulation in Java, the unexpected outcome shows up. Unfortunately, I could not find the official specification behind this... [Read More]

I have encountered a weird situation while I’m writing a piece of code in Ruby. Here is the sample code extracting the essence of the problem I have faced. First, I tried to get the matching result with a line of code as follows. [Read More]