tiny::optional – a C++ optional that does not waste memory

• tiny

  2 101 10.0 C++

  low-level library for minimizing the size of your types (by foonathan)

  I actually came across the term "tombstone" before, in the "foonathan/tiny" library. I found that one after I started building tiny::optional, and it seems to have similar use cases, but also seemed abandoned and not to implement a fully fledged std::optional replacement. So maybe he got the idea from the talk by Arthur O'Dwyer.

• tiny-optional

  3 76 10.0 C++

  Replacement for std::optional that does not unnecessarily waste memory

  tiny::optional is a header-only C++ library for x86/x64 intended to be a drop-in replacement for std::optional with the twist that it does not require additional memory for bools, floats, doubles and raw pointers. For example, a std::optional has twice the size of a raw double because of 7 padding bytes after the internal bool. These wasted bytes can have a notable impact on performance in memory bound applications. On the other hand, a tiny::optional has the size of a double by exploiting unused bit patterns (i.e. by exploiting platform specific behavior).

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• compact_optional

  1 25 10.0 C++

  A template for creating optional-like object with no space overhead

  Or there's this from 2015: https://github.com/akrzemi1/compact_optional

• cmake-init

  76 1,108 7.8 CMake

  The missing CMake project initializer

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• libCat

  18 34 9.7 C++

  🐈‍⬛ A runtime for C++23 w/out libC or POSIX. Smaller binaries, only arena allocators, SIMD, stronger type safety than STL, and value-based errors!

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