TechnicalJar

In my previous post I looked at how a C++ compiler and linker act on source codes. This post I want to take one small step further and look in to an C++ object file. An object file in C++ is generated by the compiler. As was mentioned in the previous post, an object file …

It’s important to know the role of the compiler and the linker. This helps not only in understanding errors but also in implementing many programming strategies. Unfortunately the roles of compilers and linkers are not uniform across compiler vendors but they are close. Here we will look at what a compiler and a linker do in …

Java Architecture for XML Binding (JAXB) is method to convert your class objects in to XML files. I came across this concept while looking for a way to share the architecture of exchanges and queues in an AMQP system. Although Java object serialization would’ve worked I wanted a much more ‘standard’ way to share this …

Doppler frequency shift plays a major part in wireless communications, radar and many other systems. Sometimes Doppler shift is useful, like in radar detection systems, but sometimes it’s harmful, like in mobile wireless communications systems. Calculating the Doppler shift is very trivial. , where v is the relative speed between transmitter and receiver, and the …

If coming from Java to C++, it could be slightly confusing how function inheritance works in C++. C++ uses the notion of “virtual” functions. In C++, unless a function is declared as virtual, polymorphism will not work. Lets see how this works with a simple Base class and a Derived class. #include <iostream> #include <string> …