2 days agoAtomics in C++ — What is a std::atomic? (Part 1)The radioactive part of C++, std::atomic was added in C++11 as a way to declare an atomic variable — a variable whose value changes atomically, which means there is a guarantee that no other processes/threads would see any intermediary state. Since C++11 introduced std::thread as a standard language-provided way to…Cpp7 min readCpp7 min read
Sep 11Cache Line Alignment in C++ — How It Makes Your Program Faster.As discussed in Memory and Data Alignment in C++, memory alignment is commonly used for optimisation. One of the methods is cache line alignment. Cache Lines As a prerequisite, data is moved between the CPU cache and main memory in fixed size blocks, known as cache lines. …Cpp4 min readCpp4 min read
Sep 11Memory and Data Alignment in C++ — What is Misaligned Access?Data or memory alignment is a significant concept in software development that surprisingly isn’t discussed often. Mostly because of how advanced compilers and interpreters have gotten, that these lower-level complications are taken care of without most of us knowing. But since you are programming in C++, you’re always looking for…Cpp6 min readCpp6 min read
Aug 27Inline in C++ — What it has to do with the One Definition Rule.The inline keyword has got to be the most misunderstood keyword in C++. I remember when I first started, most online sources solely mention inline as a way to hint the compiler to substitute logic of a function in-place of every instance of it being called; In other words, inlining. …Cpp6 min readCpp6 min read
Aug 20Copy and Move Elision in C++ — What is RVO/NRVO?Copy and move elision is an optimisation technique used by many C++ compilers to avoid unnecessary copying and moving of temporary variables. This speeds up processes that may otherwise be slow and inefficient, especially with objects that are “expensive” — such as containers or complex user-defined types. Let’s take a…Cpp4 min readCpp4 min read
Aug 6Template type deduction in C++ — Behind the magic.Template programming is a powerful built-in feature of C++ that most developers neglect to take the time to truly understand — mostly because it “just works”. However, it is important to be cognizant of the template type deduction process, since picking the wrong deduction behaviour could cause unintended side effects…Cpp7 min readCpp7 min read
Jul 30Static and Extern in C++ — What it really does to your program?C++ is a popular programming language, but it is also known to be difficult to grasp. One of the obscure concepts in the language is the use of static and extern. // what makes these different? int y; static int x; extern int z; Seeing the static keyword for the…Cpp6 min readCpp6 min read
