function2
Optional Argument in C++
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| function2 | Optional Argument in C++ | |
|---|---|---|
| 7 | - | |
| 528 | 9 | |
| - | - | |
| 4.7 | 0.0 | |
| 2 months ago | over 4 years ago | |
| C++ | C++ | |
| Boost Software License 1.0 | MIT License |
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function2
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Callbacks in embedded | heapless environment
Fixed size function wrappers are not only limited and also a waste of space. Use a configurable function wrapper like fu2 with a stack allocator and set small object optimizer capacity to 0.
- Scriptable Headless Player Bots and independent ECS in a Custom UE C++ Server for MMO(RPG)s.
- A custom C++ server for the Unreal Engine 5, optimized for MMO(RPG)s.
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A simple std::function alternative that never allocates
std::function wasn't cutting it for me, but I ended up going with fu2::function. It comes with a lot of features (almost too many), but the header size and compile times are comparable to , and it fit my needs pretty well.
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Idle: an asynchronous and hot-reloadable C++ dynamic component framework
Thank you, function2 is also used heavily in Idle as a type-erasure backend for continuable that is the primary asynchronous task abstraction.
- Should std::function's move assignment operation be noexcept?
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Orthodox C++
You can write your own std::function, too, nor is it the only STL type that can take a capturing lambda (std::packaged_task for example).
A capturing lambda is just a class with an operator(). It's complicated to do what std::function does, but fully possible.
In fact, custom std::function replacements have better lambda support than std::function itself. Such as unique_function in https://github.com/Naios/function2 which can handle non-copyable lambdas.
Optional Argument in C++
We haven't tracked posts mentioning Optional Argument in C++ yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
Inja - A Template Engine for Modern C++
pybind11 - Seamless operability between C++11 and Python
FunctionalPlus - Functional Programming Library for C++. Write concise and readable C++ code.
flat_map - Header only associative linear container.
LSHBOX - A c++ toolbox of locality-sensitive hashing (LSH), provides several popular LSH algorithms, also support python and matlab.
PEGTL - Parsing Expression Grammar Template Library
stx-btree - OBSOLETE, contained in https://github.com/tlx/tlx - STX B+ Tree C++ Template Classes -
Hopscotch map - C++ implementation of a fast hash map and hash set using hopscotch hashing
Hashmaps - Various open addressing hashmap algorithms in C++
Learn Project - go study
C++ B-tree - Git mirror of the official (mercurial) repository of cpp-btree