Occasionally, I find myself looking at code with nested switch statements, which need to be modified. For example, the following nested switch statements in MATLAB look at different particle types and charges: A nice way to refactor this is to combine the cases of the nested switch statements: This makes the code cleaner and easier…
I decided to compare the performance of shared_ptr in C++ when passed by const reference, by value, and by reference. Also, I compared the pros and cons of using these ways of passing an argument to a function: const ref: 2056 ns // fastest value: 3948 ns // slowest ref: 3252 ns const ref: Can…
Dr. Neil deGrasse Tyson lays out the state of science illiteracy in America:
Hypothesis: Writing multiple files using multiple threads should be much faster than writing the files without using threads. Experiment: Write 10 files using multi-threading vs single-threading. Results: The following was output on the console with numFiles = 10: Elapsed time for multi-threading: 12 seconds Elapsed time for single-threading: 28 seconds Conclusions: The gains are only…
I wanted to see the performance comparison of std::lock_guard versus the std::unique_lock. Even though they both provide slightly different implementations and abilities, the performance impact is worth investigating. So, I wrote the following and tested it on my MacBook Air: Here are the typical results: std::lock_guard elapsed time: 29400 microseconds std::unique_lock elapsed time: 29459 microseconds…
MATLAB has some built-in APIs to read and write xml files, viz., xmlread and xmlwrite. Check out the xmlread link above to see examples of how the DOM elements can be parsed with MATLAB.
There exists a POSIX C API that can be used to put the program execution on hold for a specified duration. This is done via the sleep command: In C++11, this can be accomplished via the API provided from the thread library:
Nintendo has once again revolutionized gaming with the release of its new console: the Nintendo Switch. I haven’t had a chance to buy it because it is completely sold out in my neighborhood. The console’s portability is its biggest highlight but I’ve heard there aren’t too many games available for it. Of course, the new…
In a recent post from Ars Technica: In the Cinebench R15 multithreaded rendering test, AMD says that its new processor scores about 9 percent higher than Intel’s. In the single threaded version of the same test, it’s a dead heat. AMD is back and in March, new benchmarks from various tech outlets can verify their…
I’m really excited about all the cool ways in which the C++ standard is developing. One of the updates I really like is a new set of rules for auto deduction of braced-initialized lists for C++17. In a nutshell, it allows you to declare and initialize a variable without specifying its type: Not sure when this…
