Work in progress, not ready for production use.
Libostd is an extension of the C++17 standard library which mainly provides ranges (to replace iterators) but also various other utilities like proper streams, string formatting, coroutines, concurrency utilities and others. It's meant to replace the more poorly designed parts of the C++ standard library to make the language easier and more convenient to use.
It is not feature complete right now, as most things are still being worked on.
Documentation for libostd can be found at https://docs.octaforge.org/libostd.
Please refer to it for further information (the main page should be answer
some more of your questions). You can also read doc/main_page.md and other
files in there directly if you don't need the API documentation.
Libostd is built using Meson. Therefore, you need to install Meson and then you can compile it as usual. Typically, this will be something like
mkdir build && cd build
meson ..
ninja all
This will typically build using either GCC or Clang with the default standard library. Keep in mind that it is you need at least Clang 4.0 or GCC 7.1 to build.