tiny-utf8
pfr
tiny-utf8 | pfr | |
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2 | 4 | |
534 | 1,263 | |
- | 1.0% | |
0.0 | 7.9 | |
over 1 year ago | 20 days ago | |
C++ | C++ | |
BSD 3-clause "New" or "Revised" License | Boost Software License 1.0 |
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tiny-utf8
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tiny-utf8 VS codepoint-iterator - a user suggested alternative
2 projects | 4 Jun 2023
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How to use Rcpp::wrap() to convert C++ data types?
I've recently been trying to use the tiny-utf8 library in Rcpp in order to handle unicode, but I am having serious issues trying to understand how the "wrap" part of it works. For the "as" part, I've received some help on Stack Overflow, which works great, but without a wrap(), it seems that I cannot convert the data type into those of Rcpp. I've been reading this post and trying to replicate it, but with utter failure after long hours, due likely to a lack of knowledge in C++ templates. Could someone give some pointers as to how I might go about doing this? I am at the end of my wits at this point.
pfr
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Rooting for P1061 "Structured Bindings can introduce a Pack"
This single feature opens a world of new possiblities. For example, it makes implementing "getting the number of fields" trivial. Furthrmore, and much more importantly, it enables turning a struct into a tuple. Currently, this can only be done by enumerating cases (therefore it's not fully generic), as with Boost PFR. By the way, PFR greatly simplifies our codebases, especially for parts with serialization and/or reflection.
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Minimum viable declarative GUI in C++
The code is relatively short and can be groked with a few coffees: https://github.com/boostorg/pfr/tree/develop/include/boost/pfr ; if you're using C++17 it uses a binary search (https://github.com/boostorg/pfr/blob/develop/include/boost/pfr/detail/fields_count.hpp) to count the number of fields in a struct, by starting by the observation that a likely majorant on the number of fields in a struct is sizeof(the struct) * CHAR_BIT, assuming not too many [[no_unique_address]] tomfooleries. Then once this count is known it's possible to simply map them as a tuple through sheer brute force and destructuring: https://github.com/boostorg/pfr/blob/develop/include/boost/pfr/detail/core17_generated.hpp
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The Serde Rust Framework
I wonder if the c++ approach of boost.pfr would be portable to rust ? It allows reflection on aggregates without needing to annotate anything: https://github.com/boostorg/pfr
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Counting the number of fields in an aggregate in C++20
It is an 'interesting' meta-programming problem though (wasted many weeks on it myself, fixed a small gcc bug - a 'uniform init' edge case and filed an issue with magic_get Reflecting array members of aggregate structs).
What are some alternatives?
rust-lexical - Fast numeric to- and from-string conversion routines.
Magic Enum C++ - Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
replxx - A readline and libedit replacement that supports UTF-8, syntax highlighting, hints and Windows and is BSD licensed.
magic_get - std::tuple like methods for user defined types without any macro or boilerplate code
json - A C++11 library for parsing and serializing JSON to and from a DOM container in memory.
MLV-App - All in one MLV processing app.
ImGuiColorTextEdit - Colorizing text editor for ImGui
ComLightInterop - Cross-platform COM interop library for .NET Core 2.1 or newer
fuif - Free Universal Image Format
create-rust-app - Set up a modern rust+react web app by running one command.
vvenc - VVenC, the Fraunhofer Versatile Video Encoder
EU4ConsolePatcher - A simple memory patcher which enables the internal developer console in ironman mode