README.md

C++ Snippets

This repository contains reusable snippets of C++ code to implement various tasks such as generating random numbers or working with dates.

The repository also serves as a quick reminder for one who has not been working with C++ for a while.

The most important directory is snippets. This is a CMake project and can be opened as such in Microsoft Visual Studio or JetBrains CLion.

Learning Resources

Conferences

• CppCon
• C++Now
• ACCU Conference
• Microsoft Build *

References

• C++ Reference
• Another C++ Reference
• C++ Standard Draft (Web)
• Standard Features Support by Compilers

Guidelines

• C++ Core Guidelines
• C++ FAQ

Game Engines

• Godot
• LibGDX

Podcasts

• C++ Cast

HOWTOs

How to build a third-party library

./configure --prefix=/usr/local/libname-version
make
make install

To run an executable built against a third-party library:

LD_LIBRARY_PATH=/usr/local/name-version/lib/ exe-name

How to link against a library

Linking against a static .a library:

g++ source.cpp /path/to/libmy.a

Linking against a shared library in a standard location:

# against libm.so
g++ source.cpp -lm

Linking against a custom shared library:

# against libX11.so
g++ source.cpp -L/path/to/libs/ -lX11

The list of standard locations to search for libraries is in /etc/ld.so.conf. If this file is modified, ldconfig needs to be run to process the changes.

How to analyze libraries and binaries

To list all functions in a library or compiled executable, run

nm library.a

To see which shared libraries are required by an executable, run

ldd my_app

New Repository Setup

git submodule add https://github.com/google/googletest.git
git submodule init
git submodule update

How to Configure Code Runner Plugin for VS Code

A single-file app or a test case can easily be run in VS Code with the "Code Runner" plugin. The plugin needs the executor map to be configured for C++, as follows.

On Windows, using VC++ compiler:

"code-runner.executorMap": {
  "cpp": "\"C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Auxiliary\\Build\\vcvars64.bat\" && cd $dir && cl $fileName /std:c++20 /nologo /EHsc /W4 /Fe:$fileNameWithoutExt.exe && $dir$fileNameWithoutExt.exe && DEL $dir$fileNameWithoutExt.exe && DEL $dir$fileNameWithoutExt.obj"
}

On Windows, using mingw:

"code-runner.executorMap": {
  "cpp": "g++ -std=c++20 $fullFileName -o $fileNameWithoutExt && $fileNameWithoutExt.exe && DEL $fileNameWithoutExt.exe"
}

On Linux, using GCC:

"code-runner.executorMap": {
  "cpp": "g++ -lstdc++ --std=c++17 $fullFileName && ./a.out && rm ./a.out"
}