Attribution

Compile Time Regular Expression

• Authors:
  • Hana Dusíková (https://github.com/hanickadot)
• License: Apache License 2.0 (https://github.com/hanickadot/compile-time-regular-expressions/blob/main/LICENSE)
• Source code

Reason of inclusion:
It can do this:

struct FDate { std::string_view year, month, day; };
 
auto result = ctre::match<R"((?<year>\d{4})/(?<month>\d{1,2})/(?<day>\d{1,2}))">(s);
return FDate{ result.get<"year">(), result.get<"month">(), result.get<"day">() };

In compile time non-the less! Unreal's own included Regex library pales in comparison.

magic_enum

• Authors:
  • Daniil Goncharov (https://github.com/Neargye)
• License: MIT (https://github.com/Neargye/magic_enum/blob/master/LICENSE)
• Source code

Reason of inclusion:
Serialize/deserialize C++ enums in human readable form without the need to use UENUM macros and UAT generated headers.

range-v3

• Authors:
  • Eric Niebler (https://ericniebler.com)
• License: Boost Software License 1.0 (https://github.com/ericniebler/range-v3/blob/master/LICENSE.txt)
• Source code

Reason of inclusion:
To have a "nice" declarative way to handle views for Unreal containers

yaml-cpp

• Authors:
  • Jesse Beder (https://github.com/jbeder)
• License: MIT (https://github.com/jbeder/yaml-cpp/blob/master/LICENSE)
• Source code

Reason of inclusion:
A YAML parser and emitter in C++. Unreal Engine doesn't provide one.

constexpr-xxh3

• Authors:
  • Chys (https://chys.info)
• License: BSD 2-Clause License (https://github.com/chys87/constexpr-xxh3/blob/main/LICENSE)
• Source code

Reason of inclusion:
This allows us to have almost free runtime exact type checking.

xxHash

• Authors:
  • Yann Collet (http://fastcompression.blogspot.fr/)
  • Easy as PI 3.14 (https://github.com/easyaspi314)
  • Takayuki Matsuoka
  • et. al.
• License: BSD 2-Clause License (https://github.com/Cyan4973/xxHash/blob/dev/LICENSE)
• Source code

Reason of inclusion:
xxHash algorithm is used by another third-party implementation in constexpr time. This allows us to have almost free runtime exact type checking.

Intel ISPC Tasksys

• Authors:
  • Intel
• License: BSD-3-Clause (https://github.com/ispc/ispc/blob/main/LICENSE.txt)
• Source code

Reason of inclusion:
To support launch, sync and task keywords of ISPC.