mw::Signal

A header only Signal Slot library inspired by the corresponding boost library.

The library is using C++20. While using Visual Studio, it must be at least version 12 or higher. Can also be build by using Clang version >=14 or GCC version >= 11.

Usage

Just copy the header file and license file. No external dependencies are needed.

Using CMake

When using CMake it could be included by:

FetchContent_Declare(Signal
    GIT_REPOSITORY
        https://github.com/mwthinker/Signal.git
    GIT_TAG
        1f7cf5097a1fdfdefe49d78e215cf12653407629 # commit SHA of Signal to use
    OVERRIDE_FIND_PACKAGE # CMake version must be >= 3.24 to support this
)

target_link_libraries(YourProject
    PRIVATE
        Signal
)

Code example

#include <mw/signal.h>
#include <iostream>

int main() {
    mw::Signal<int> signal;
    
    auto connection = signal.connect([](int someInteger) {
        std::cout << "Hello world! Number " << someInteger << "\n"; 
    });

    signal(10);
    signal(15);

    return 0;
}

Result:

Hello world! Number 10
Hello world! Number 15

For more example code see Signal_Example or Signal_Test.

Building project locally

To build localy vcpkg can be used to insert GTest dependency to test project.

Inside this repository folder, e.g. run:

cmake --preset=unix -B build -DSignal_Test=1 -DSignal_Example=1; cmake --build build; ctest --test-dir build/Signal_Test
./build/Signal_Example/Signal_Example

Open source

The project is under the MIT license (see LICENSE.txt).