Strings and their utilities (runtime and compile time)
Most of the code and classes are defined in the f5::cord namespace, but some common use ones are also available under f5.
There are a few low level memory span/view types and buffers used for dealing with contiguous runs of data.
A new vocabulary type for immutable Unicode strings using a shared ownership model. Because it has shared ownership, copying is much cheaper than for a normal string.
This type is also available as f5::u8string.
A new view class for Unicode strings. This class is mostly constexpr and is usable as a literals type.
It is also available as f5::u8view.
A compile time string type where the characters can be manipulated. tstrings can be concatenated with other tstrings to make tstrings and they can also be converted to an lstring. They can be created from a string literal using the _t literal modifier:
using namespace f5::literals;
constexpr auto hello_world = "Hello, World!"_t;
tstring instances can be concatenated to create new tstring instances. De-indexing is also constexpr.
For full details see the Unicode documentation.