immer
cpp-httplib
immer | cpp-httplib | |
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25 | 38 | |
2,425 | 11,843 | |
- | - | |
6.2 | 8.8 | |
4 days ago | 7 days ago | |
C++ | C++ | |
Boost Software License 1.0 | MIT License |
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immer
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Text Editor Data Structures: Rethinking Undo
I've been working on an editor (not text) in C++ and pretty early got into undo/redo. I went down the route of doIt/undoIt for commands but that quickly got old. There was both the extra work needed to implement undo separately for every operation, but also the nagging feeling that the undo operation for some operation wasn't implemented correctly.
In the end, I switched to representing the entire document state using persistent data structures (using the immer library). This vastly simplified things and implementing undo/redo becomes absolutely trivial when using persistent data structures. It's probably not something that is suitable for all domains, but worth checking out.
https://github.com/arximboldi/immer
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Show HN: A hash array-mapped trie implementation in C
How does this compare to https://github.com/arximboldi/immer (other than the C/C++ difference)?
Also, it's my understanding that, in practice, persistent data structures require a garbage collector in order to handle deallocation when used in a general-purpose way. How does your implementation handle that?
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Text Editor Data Structures
You might be interested in ewig and immer by Juan Pedro Bolivar Puente:
https://github.com/arximboldi/ewig
https://github.com/arximboldi/immer
See the author instantly opening a ~1GB text file with async loading, paging through, copying/pasting, and undoing/redoing in their prototype “ewig” text editor about 27 minutes into their talk here:
https://m.youtube.com/watch?v=sPhpelUfu8Q
It’s backed by a “vector of vectors” data structure called a relaxed radix balanced tree:
https://infoscience.epfl.ch/record/169879/files/RMTrees.pdf
That original paper has seen lots of attention and attempts at performance improvements, such as:
https://hypirion.com/musings/thesis
https://github.com/hyPiRion/c-rrb
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value semantics and spans/views
You’re absolutely right, however people have been putting in the “extra efforts” required for efficiency. Check out immer if you’re interested.
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How to synchronize access to application data in multithreaded asio?
The C++ immer library: https://github.com/arximboldi/immer
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Purely Functional Data Structure by Chris Okasaki [pdf]
For C++ check this one out - https://github.com/arximboldi/immer
- Persistent and immutable data structures written in C++14
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Introducing B++ Trees, a C++ B+ Tree library
Yeah I agree that I should link that wikipedia page in the docs, I'll do that as soon as I get a chance. immer (https://github.com/arximboldi/immer) also links that page in its docs, for the exact same reason I'm sure. Interestingly, there is a lot of overlap between persistent data structures in the functional programming sense and persistent data structures in the persisted-to-disk sense because persistent data structures in the FP sense are one of the best ways to guarantee atomic updates and safe failure recovery in a persisted-to-disk system! Btrfs and ZFS, as well as many databases, are at their core basically just copy-on-write B+ trees.
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What are some architectural patterns for creating a game editor.
I’ve never tried it, but I love the idea of implementing editor scene state using immutable data structures like https://github.com/arximboldi/immer With that, every edit would append a new node to a list of scene states. Undo/redo becomes iterating your view of the scene up and down through that list. Can’t screw up an undo function if there’s never any work to do :P
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TypeScript Without Side Effects
I have! I think it's related to the C++ immer library which I used several years ago in Vortex. It's kinda like the previous generation of ValueScript. 🍻
cpp-httplib
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Experience using crow as web server
Alternatives at the low to medium level of abstraction include civetweb and mongoose, which have a common ancestor. Both of these appear to be C rather than C++, but seem to be production quality and well-documented. Another C library is cpp-httplib, which is probably too low-level for me.
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REST APIs using C++. (Is this even done much?)
I use this all the time to expose an admin rest interface to my public installations.
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C++ websocket and HTTP client
I'm using this one: https://github.com/yhirose/cpp-httplib
- Compiling CrowCPP on Windows and about to kms
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PocketPy: A Lightweight(~5000 LOC) Python Implementation in C++17
Every one of these libraries uses CMake to make it easier for end users to consume their libraries. In fact your example uses CMake as well such that I can consume it the way I describe above.
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xbps-src ARM: glslangValidator: cannot execute binary file: Exec format error
# Template file for 'yuzu-mainline' pkgname=yuzu-mainline version=1295 revision=1 _cubeb_version=75d9d125ee655ef80f3bfcd97ae5a805931042b8 _sanitizers_cmake_version=aab6948fa863bc1cbe5d0850bc46b9ef02ed4c1a _dynarmic_version=bd570e093ca1d1206961296b90df65cda7de8e87 _sirit_version=d7ad93a88864bda94e282e95028f90b5784e4d20 _mbedtls_version=8c88150ca139e06aa2aae8349df8292a88148ea1 _xbyak_version=348e3e548ebac06d243e5881caec8440e249f65f _SDL_version=f17058b562c8a1090c0c996b42982721ace90903 _cpp_jwt_version=e12ef06218596b52d9b5d6e1639484866a8e7067 _cpp_httplib_version=305a7abcb9b4e9e349843c6d563212e6c1bbbf21 _Vulkan_Headers_version=00671c64ba5c488ade22ad572a0ef81d5e64c803 create_wrksrc=yes build_wrksrc=${pkgname}-mainline-0-${version} build_style=cmake configure_args="-DYUZU_CHECK_SUBMODULES=OFF -DYUZU_TESTS=OFF -DSIRIT_USE_SYSTEM_SPIRV_HEADERS=ON" hostmakedepends="pkg-config qt5-host-tools qt5-qmake clang" makedepends="fmt-devel libenet-devel inih-devel libusb-devel liblz4-devel opus-devel zlib-devel libzstd-devel boost-devel qt5-devel qt5-multimedia-devel libva-devel ffmpeg-devel glslang-devel SPIRV-Headers catch2 json-c++ speexdsp-devel" short_desc="Nintendo Switch Emulator" maintainer="Owen Law " license="GPL-3.0-or-later" homepage="https://github.com/yuzu-emu/yuzu-mainline" changelog="${homepage}/releases/tag/mainline-0-${version}" distfiles="${homepage}/archive/refs/tags/mainline-0-${version}.tar.gz https://github.com/herumi/xbyak/archive/${_xbyak_version}.tar.gz https://github.com/MerryMage/dynarmic/archive/${_dynarmic_version}.tar.gz https://github.com/yuzu-emu/mbedtls/archive/${_mbedtls_version}.tar.gz https://github.com/mozilla/cubeb/archive/${_cubeb_version}.tar.gz https://github.com/arsenm/sanitizers-cmake/archive/${_sanitizers_cmake_version}.tar.gz https://github.com/yuzu-emu/sirit/archive/${_sirit_version}.tar.gz https://github.com/libsdl-org/SDL/archive/${_SDL_version}.tar.gz https://github.com/arun11299/cpp-jwt/archive/${_cpp_jwt_version}.tar.gz https://github.com/yhirose/cpp-httplib/archive/${_cpp_httplib_version}.tar.gz https://github.com/KhronosGroup/Vulkan-Headers/archive/${_Vulkan_Headers_version}.tar.gz" checksum="b8b2616a24653352b8afd145ee46eb9ead07c6ef3aff8c0ff3a6225b381b4b85 fbe54fc881cdfb0876ddc8f29f74674a311ba7ae4b774751cb1b637c043e3bae 170530852547ee2f5517b0a12e643646e51a9974414084d389a85632df7c4518 8d3553ea5c3b47789c5a1a6437f948525d0a8ce2a0897000a36b511000c6bad4 8c5b7ca55ee586a3e5e63de2d31c319045f92e949140a734846a0d69ad342e2e 9f5b073625375322236a94ce8d2d803cdedad321c91e63845f487b9ebfb2c433 6612f924d1f2b2c7cb37effcda5d78550fad276887ee8f9bc391b9ecbf9e4a64 2a149e79712027d2d8141e3233df2f6679825b6f78237db3db72bc6cfc08b845 b4cc0e1f89d3c60a4dde74baa730a90de13c5dd5155b09d8dd34cd3205a6e758 61a97686b03edffa737c396f54e48da2ff0a04c3f6859ec9e80853aea6508030 99443e30caee5d2c0019de6549cc0c7c0432214494617da445753fc46374a7c3" post_extract() { mv "xbyak-${_xbyak_version}" xbyak cp -r xbyak "${build_wrksrc}/externals" mv "dynarmic-${_dynarmic_version}" dynarmic cp -r dynarmic "${build_wrksrc}/externals" mv "mbedtls-${_mbedtls_version}" mbedtls cp -r mbedtls "${build_wrksrc}/externals" mv "SDL-${_SDL_version}" SDL cp -r SDL "${build_wrksrc}/externals" mv "cubeb-${_cubeb_version}" cubeb mv "sanitizers-cmake-${_sanitizers_cmake_version}" sanitizers-cmake cp -r sanitizers-cmake cubeb/cmake cp -r cubeb "${build_wrksrc}/externals" mv "sirit-${_sirit_version}" sirit cp -r sirit "${build_wrksrc}/externals" mv cpp-jwt-${_cpp_jwt_version} cpp-jwt cp -r cpp-jwt ${build_wrksrc}/externals mv cpp-httplib-${_cpp_httplib_version} cpp-httplib cp -r cpp-httplib ${build_wrksrc}/externals mv Vulkan-Headers-${_Vulkan_Headers_version} Vulkan-Headers cp -r Vulkan-Headers ${build_wrksrc}/externals }
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How to handle HTTPS - to dynamic link, or find a better solution?
Through development I've been making requests to my locally hosted sever using cpphttplib via HTTP and always had the intention of using HTTPS once my website was live. Not the smartest idea to leave this until the end, I know.
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Why is there no simple http request/response library?
Have you tried searching the internet? https://github.com/yhirose/cpp-httplib
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Issues with libssl on Mac
I'm new to C++, and have been trying to make a simple HTTP request. I stumbled on cpp-httplib and decided to try it out.
- What are some cool modern libraries you enjoy using?
What are some alternatives?
babashka - Native, fast starting Clojure interpreter for scripting
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clj-kondo - Static analyzer and linter for Clojure code that sparks joy
C++ REST SDK - The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
graalvm-clojure - This project contains a set of "hello world" projects to verify which Clojure libraries do actually compile and produce native images under GraalVM.
Crow - A Fast and Easy to use microframework for the web.
ewig - The eternal text editor — Didactic Ersatz Emacs to show immutable data-structures and the single-atom architecture
Boost.Beast - HTTP and WebSocket built on Boost.Asio in C++11
deprecated-coalton-prototype - Coalton is (supposed to be) a dialect of ML embedded in Common Lisp.
cpr - C++ Requests: Curl for People, a spiritual port of Python Requests.
awesome-modern-cpp - A collection of resources on modern C++
Restbed - Corvusoft's Restbed framework brings asynchronous RESTful functionality to C++14 applications.