This Week I Learned - 2017 Week 02

Last week post or the whole series.

#1 Continue with CMake again. Not sure why, I'm having lots of fun picking up C++ and enjoying the learning process, although it's quite frustrating when you're stuck with a problem. The weird thing is, is totally different experience with doing web development compare to system programming. Nevertheless, some knowledge gained from using CMake.

As I mentioned before, if you're picking up C++, start with Modern C++, or at least C11 standard. To enable this explicitly in CMake, put this line in your CMakeLists.txt file.
set(CMAKE_CXX_STANDARD 11)

To verify that the setting have been set to compiler.
$ make VERBOSE=1 | grep std
/usr/bin/c++     -std=gnu++11 -o CMakeFiles/stree.dir/stree.cc.o -c /home/ang/src/stree/stree.cc

If you move all your source files into a `src` folder, how do you configure CMake to include these files during compilation? Using GLOB directive.
file(GLOB SOURCES src/*.cpp)
add_executable(progname ${SOURCES})

#2 The C++ 'const' Declaration: Why & How. Definitely a good guide and explanation on understanding and using `const` keyword in C++. The gist of it is `const` prevents alternation but it sometimes caused confusion depends on the context of usages in variables, methods, return values, or function arguments.

#3 It just dawned on me that the sole reason Design Patterns (the book) was written is to collect all the workarounds to the limitation of C++ language itself. For example C++ does not support introspection or dynamic instantiation, hence, a list of creation patterns exists to handle the object creation. What this means is that C++ can't create objects during run-time (like from a string name), everything needs to be defined during compile-time. Or should I use Registry Pattern instead? While we're on the Design Patterns book, much have changed since the book was published. Most of the code example is still using the old C++ way, Modern C++ should make these code cleaner. Furthermore, Iterator was added to Standard Template Library (STL) and there is no need for anyone to implement it manually. I'm slowly beginning to understand why so many programming languages (Java, Rust, Go, and others) were created. Coding in C++ is not, what I would describe, a convenient experiences. I'm still in the early phase of learning, struggling is inevitable, especially you'll need to unlearn quite a number of things from dynamic languages.

#4 ISO standards for programming languages. Stumbled upon this while looking into different standards for software development. Was reading these intensively for the past two months. Seriously, after working for quite some times in development field, didn't realize that these standards exists in the first place. Notable standards are ISO/IEC 14882 (C++), ISO/IEC 9899 (C), ISO/IEC 23270 (C#), and ISO/IEC 30170 (Ruby). Surprise that one particular programming language is notable missing from the list, Java. Did I miss out anything? Nevertheless, standard compliance ensures portability in different operating systems.

Meanwhile, MIL-STD-498, a military standard for system development life-cycle. Superseded by IEEE STD 12207 or ISO/IEC 12007. Yet I'm still enduring the 498 while newer standards already long established. Why? Simply because the documentation is freely available and most academic world still following these syllabus. Standard feel rigid, especially when there are lots of paper works and the development style still following water fall model, very sequentially.

#5 The same thing every single damn year. Generic advice on solving, yet another first word problem, which is just sugarcoating for seeking fortune or fame. Working with younger people have some profound effect on me. How do I regain and reignite my interests on those old hobbies of mine again? You do learn a lot from them but at the same you also see a lot of repeated mistakes. Unfortunately, life moves forward. There are things you must give up as the time or stamina does not permits it anymore. Or it it?

#6 What do you want to learn in 2017 and this is how/now I plan to do it. Yes, another same damn question asked every year, especially the end of the previous year. So many things to try out, so little time. Develop a system and incorporated it into your daily life. Just start? But if you're not finishing, then you're just busy but not productive. Hence, to finish!

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