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C++ - ABI (Application Binary Interface) Compatibility

Introduction and Motivating Example Two versions of the same library might be API-Compatible (you can recompile your code), but they are not ABI-compatible (you cannot just swap the binary .so wit...

Posted by Rico's Nerd Cluster on April 9, 2023

C++ - chrono

Basic Timing: high-resolution clock 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 #include <chrono> void foo(){ auto start = std::chrono::high_resolution_clock::now(); std::cout<<"Hello...

Posted by Rico's Nerd Cluster on March 18, 2023

C++ - Manual Memory Garbage Collector

Boehm-Demers-Weiser (BDW) Collector

Boehm-Demers-Weiser Collector (BDW) Collector BDW Collector is designed as a “drop-in” replacement in C for the default memory allocation functions (malloc, free, etc.). Developers can link agains...

Posted by Rico's Nerd Cluster on March 15, 2023

C++ - Iterators

Basic Usage An iterator needs to be dereferenced *it or it->first so its internal data can be accessed. If you have an std::unordered_map<Key, Value> (or std::map<Key, Value>), its...

Posted by Rico's Nerd Cluster on March 6, 2023

C++ - [OOP] Members

Member Attributes and Methods, Copy, Move

Member Attributes Let’s take a look at a tricky example 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 #include <iostream>...

Posted by Rico's Nerd Cluster on March 6, 2023

C++ - [OOP] Polymorphism - Virtual Functions and Virtual Inheritance

Virtual is virtually complicated. Dynamic Dispatch, Dreadful Diamond Derivative (DDD) Problem ...

Introduction The virutal keyword is very versatile. A really short and nasty summary is, it is to ensure the correct functions or base class is inherited / loaded during runtime. Motivating Examp...

Posted by Rico's Nerd Cluster on March 3, 2023

C++ - [OOP] Initialization

Default Initialization, Memory Order, Ctor for Inheritance, Parsing and Construction

Default Initialization Default Initialization is when a variable is initialized without explicit value. They could be in an uninitialized state and accessing them could be an undefined behavior. ...

Posted by Rico's Nerd Cluster on March 1, 2023

C++ - Friends

Friend Class, Friend Function, Inner Class

In C++, friend functions and friend classes provide controlled access to private members of a class. While useful, they should be used judiciously to maintain encapsulation and avoid unnecessary de...

Posted by Rico's Nerd Cluster on February 28, 2023

C++ - [Concurrency 3] Memory Model

Introduction The C++ memory model was formally introduced in C++11 mainly for multithreading. Before C++11: Threading was platform-dependent. (POSIX threads for Unit systems) Behavior of sh...

Posted by Rico's Nerd Cluster on February 21, 2023

C++ - [Concurrency 2] Coroutine

Coroutine Coroutines in C++ allows us to write asynchronous code in a sequential style. It allows us to resume and suspend, instead of blocking a thread. A coroutine by default is single-threaded,...

Posted by Rico's Nerd Cluster on February 20, 2023

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