https://github.com/georgiifirsov/patternmatching

Short header-only library that allows you to use pattern matching in C++. Written in pure standard C++14.
https://github.com/georgiifirsov/patternmatching

cplusplus cplusplus-14 cpp cpp14 functional-programming pattern-matching templates

Last synced: 10 days ago
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Short header-only library that allows you to use pattern matching in C++. Written in pure standard C++14.

• Host: GitHub
• URL: https://github.com/georgiifirsov/patternmatching
• Owner: GeorgiiFirsov
• License: gpl-3.0
• Created: 2020-02-25T21:43:12.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-03-11T20:48:48.000Z (over 4 years ago)
• Last Synced: 2024-08-10T04:23:17.593Z (3 months ago)
• Topics: cplusplus, cplusplus-14, cpp, cpp14, functional-programming, pattern-matching, templates
• Language: C++
• Homepage: https://georgyfirsov.github.io/src/cpp_pattern_matching.html
• Size: 36.1 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# PatternMatching

**Motivation:** there's no pattern matching in C++, but sometimes it can make your code

more clean, than without it. Consider this example:

```cpp

//

// You need to call Java fucntion from C++.

// Usually you do this way:

//

int JavaCallHelper(int elem)

{

    return jni->CallIntFunction( elem );

}

float JavaCallHelper(float elem)

{

    return jni->CallFloatFunction( elem );

}

template

auto JavaCall(_Type elem)

{

    return JavaCallHelper(elem);

}

```

With pattern matching you can do such beautiful thing:

```cpp

template

auto JavaCall(_Type elem)

{

    // Elements are passed as tuple in order 

    // to support multiple arguments

    return match::Match(

        std::make_tuple( elem ),

        [](int elem)   { return jni->CallIntFunction( elem ); },

        [](float elem) { return jni->CallFloatFunction( elem ); }

    );

}

```

### Advantages

- Header only library

- C++14 supported

- Dispatch is a compile-time process => no runtime delay