expected
cpr
expected | cpr | |
---|---|---|
18 | 22 | |
1,404 | 6,167 | |
- | 1.0% | |
2.1 | 8.4 | |
4 months ago | 8 days ago | |
C++ | C++ | |
Creative Commons Zero v1.0 Universal | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
expected
- Functional Programming in Modern C++: The Imperatives Must Go – Victor Ciura [video]
- Functional exception-less error handling with C++23's optional and expected
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C++23's New Fold Algorithms - C++ Team Blog
On this topic Sy Brand is a guarantee, in fact he did the https://github.com/TartanLlama/expected and several presentation of the subject.
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What is the status of the monadic operations for std::expected? It seems like they made it into the standard for C++23, but they don't actually seem to be available in the std::expected implementation (in MSVC's STL)
In the meantime, I may use the TartanLlama implementation (here) and plan around replacing it with the real deal in the near future.
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ADSP Episode 114: Rust, Val, Carbon, ChatGPT & Errors with Barry Revzin!
Sy Brand's tl::expected
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Daily bit(e) of C++ | Error handling
expected is my favourite little part of cpp23, I’m using it often in codebase with https://github.com/TartanLlama/expected 😁
- Noticing the the difference in coding when going back to C++
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What are some cool modern libraries you enjoy using?
outcome and/or expected
- Do you use builder pattern?
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Why should I have written ZeroMQ in C, not C++ (2012)
Eventually you'll be able to use std::expected in C++23!
https://en.cppreference.com/w/cpp/header/expected
Don't throw exceptions, require the caller to handle errors and propagate them up the stack (everything returns an expected) if they cannot be handled. You are forced to model the error domains instead of just throwing an exception and assuming the caller knows to catch it and do something with it.
Java has checked exceptions, but, Kotlin decided to abandon them.
The nice codebases I have worked on stick to the Result type in Swift or Kotlin. And thus you are forced to 'translate' errors (exceptions?) as described in Alan Griffith's 'Exceptional Java'.
https://accu.org/journals/overload/10/48/griffiths_406/
"If a checked exception is thrown (to indicate an operation failure) by a method in one package it is not to be propagated by a calling method in a second package. Instead the exception is caught and "translated". Translation converts the exception into: an appropriate return status for the method, a checked exception appropriate to the calling package or an unchecked exception recognised by the system. (Translation to another exception type frequently involves "wrapping".)"
If you can't wait for C++23, there's a single header implementation here.
https://github.com/TartanLlama/expected
cpr
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What C++ library do you wish existed but hasn’t been created yet?
This one might fit the bill https://github.com/libcpr/cpr
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[CMake] Can't include external header in .h file
cmake_minimum_required(VERSION 3.15) project(xrpc++ DESCRIPTION "C++ AT Protocol XRPC library" VERSION 1.0.0 LANGUAGES CXX) include(FetchContent) FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/libcpr/cpr.git GIT_TAG 2553fc41450301cd09a9271c8d2c3e0cf3546b73) # The commit hash for 1.10.x. Replace with the latest from: https://github.com/libcpr/cpr/releases FetchContent_MakeAvailable(cpr) FetchContent_Declare(json URL https://github.com/nlohmann/json/releases/download/v3.11.2/json.tar.xz) FetchContent_MakeAvailable(json) add_library(${PROJECT_NAME} SHARED src/lexicon.cpp src/xrpc.cpp ) target_link_libraries(${PROJECT_NAME} PRIVATE cpr::cpr) target_link_libraries(${PROJECT_NAME} PRIVATE nlohmann_json::nlohmann_json) set_target_properties(${PROJECT_NAME} PROPERTIES VERSION ${PROJECT_VERSION}) set_target_properties(${PROJECT_NAME} PROPERTIES SOVERSION 1) target_include_directories(${PROJECT_NAME} PUBLIC include) set(CMAKE_BUILD_TYPE debug)
include(FetchContent) FetchContent_Declare(cpr GIT_REPOSITORY https://github.com/libcpr/cpr.git GIT_TAG 2553fc41450301cd09a9271c8d2c3e0cf3546b73) # The commit hash for 1.10.x. Replace with the latest from: https://github.com/libcpr/cpr/releases FetchContent_MakeAvailable(cpr)
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How to convert libcurl to C++?
There is also the cpr package which should offer a more c++ focussed interface for curl.
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Trying to use libcpr, linking errors - newbie...
So I'm very new to C++ and I'm trying to write a C++ version of a tool that I put together in Python. I'm trying to use libcpr for all my HTTP needs. I've spent the day trying to get it set up and working, but I'm getting a bunch of linking errors when I try to run. I really don't know if I did the building of it correctly, I'm trying to use Visual Studio Community 2022 and the Usage section of their docs talks about CMake and a couple package manager methods.
- Como são feitos os downloaders? (exemplos no texto)
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Standardise a C++ build tool and package manager?
I think vcpkg manifests have solved a really key portion of the "please give me these libraries" problem. Couple lines in a json file, pass CMake to your vcpkg toolchain script path and triplet, and you're pretty much done with dependencies. I actually used it for a project with libcpr/cpr and a couple other popular libraries, and I was shocked at how painless it was to get up and running with some web request stuff.
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What are some cool modern libraries you enjoy using?
Libraries like nlohmann's json, cpr, fmt are prime examples of what I'm seeking. Any suggestions?
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I'm getting a 422 Validation Failed from Github API. Only when making a request with the Cpr library.
Basically specifying the language and the repo, and it does work when the request is made from postman or from the browser. However, when using https://github.com/libcpr/cpr, I'm getting the following response:
- how to make a C++ web scraper?
What are some alternatives?
libCat - 🐈⬛ A runtime for C++26 w/out libC or POSIX. Smaller binaries, only arena allocators, SIMD, stronger type safety than STL, and value-based errors!
libcurl - A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
AECforWebAssembly - A port of ArithmeticExpressionCompiler from x86 to WebAssembly, so that the programs written in the language can run in a browser. The compiler has been rewritten from JavaScript into C++.
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.
cpp-libp2p - C++17 implementation of libp2p
Boost.Beast - HTTP and WebSocket built on Boost.Asio in C++11
Thrust - [ARCHIVED] The C++ parallel algorithms library. See https://github.com/NVIDIA/cccl
cpp-httplib - A C++ header-only HTTP/HTTPS server and client library
magnum - Lightweight and modular C++11 graphics middleware for games and data visualization
curlpp - C++ wrapper around libcURL
stb - stb single-file public domain libraries for C/C++
POCO - The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems.