range-v3
scnlib
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range-v3 | scnlib | |
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19 | 18 | |
4,011 | 938 | |
- | - | |
4.4 | 9.4 | |
about 1 month ago | 11 days ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | Apache License 2.0 |
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.
range-v3
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Why are strings and IO so complicated?
std::ranges is in c++20, but you can pull in the library it was based on if you use 17 (https://github.com/ericniebler/range-v3)
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Java Streams in c++
What you are describing seems to be std::ranges. If you’re interested in understanding how to implement it, I recommend checking out the original reference implementation, rangev3. Trying to implement your own ranges framework is really good practice for learning how to do efficient, advanced generic programming in C++. I highly recommend it as a hobby learning project. But it’s also really, really hard to do correctly, so please just use the stdlib and/or rangev3 in any real project.
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What are some of the ways to make a super nasty nested loop become clean?
In C++23, there will be std::views::cartesian_product. It is already available in the range-v3 library, the one that the standard is based on.
- 295 pages on Initialization in Modern C++ :)
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Function composition in modern C++
/** * @brief Forwards value equivalent to the std::forward. * * Using cast instead of std::forward to avoid template instantiation. Used by * Eric Niebler in range library. * * @see https://github.com/ericniebler/range-v3 */
- PocketPy: A Lightweight(~5000 LOC) Python Implementation in C++17
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Is there an <algorithm> way to filter + transform multiple containers at once
It uses a custom zip_iterator (which isn't very good, and you should really use the one from boost or from range-v3).
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what annoys you most while using c++?
It contains very little functionality compared to the Eric Niebler’s reference implementation for my liking. Especially views. This will undoubtedly change in the future. But the point is moot, because they are not really supported the is no other option for now other than https://github.com/ericniebler/range-v3.
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C++20 Ranges Algorithms – 7 Non-Modifying Operations
range-v3 is a great library allowing you to bridge the gap: https://github.com/ericniebler/range-v3
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CXXIter: A chainable c++20 LINQ-like iterator library
[range-v3](https://github.com/ericniebler/range-v3) which std::ranges was based on has the `to>()` which as far as I know is expected to get into c++23 :)
scnlib
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Why are strings and IO so complicated?
scnlib (https://github.com/eliaskosunen/scnlib) scanf
- Reddit++
- Safe and cross platform C++11 alternative to sscanf
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CPM.cmake to make CMake's FetchContent easier
include(FetchContent) FetchContent_Declare( Catch2 GIT_REPOSITORY https://github.com/catchorg/Catch2.git GIT_TAG v3.0.0-preview4 ) FetchContent_Declare( fmt GIT_REPOSITORY https://github.com/fmtlib/fmt.git GIT_TAG 9.1.0 ) FetchContent_Declare( scnlib GIT_REPOSITORY https://github.com/eliaskosunen/scnlib.git GIT_TAG v1.1.2 ) FetchContent_MakeAvailable(Catch2 fmt scnlib)
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[C++20] ClearIO library (unfinished)
Yeah, but parsing format strings in runtime induces an overhead, and doing it in compile time is not trivial, and I’m not sure ClearIO is worth the trouble, since it turns out scnlib exists.
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My AoC2021 solutions in C++
The code is rather nice (in my biased opinion) and makes heavy use of a couple of libraries like scnlib and [Eigen](eigen.tuxfamily.org/). Some things could probably be more optimized but I mainly focused on conciseness. I hope this is useful and I can explain my thought process further if you have any questions.
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what annoys you most while using c++?
I've found https://github.com/eliaskosunen/scnlib but haven't tested it. Maybe that suits your needs for 2.
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The Year is 2022 and the Standard is C++20; what is your preferred way to do Text I/O?
I had a user enum like enum class Color {Red, Green, Blue}; that I wanted to add serialization support for. Following the docs (https://scnlib.readthedocs.io/), after some tweaks I arrived at the following:
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scnlib (scanf for modern C++) - version 1.0 released
Thanks for the comment, I made an issue tracking this: https://github.com/eliaskosunen/scnlib/issues/51
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Modern C++ in Advent of Code
I am using some modern libraries: scnlib fmtlib Eigen and usually abuse lambdas :)
What are some alternatives?
Boost.Asio - Asio C++ Library
C++ Format - A modern formatting library
cppitertools - Implementation of python itertools and builtin iteration functions for C++17
gainput - Cross-platform C++ input library supporting gamepads, keyboard, mouse, touch
CppCoreGuidelines - The C++ Core Guidelines are a set of tried-and-true guidelines, rules, and best practices about coding in C++
cpp-peglib - A single file C++ header-only PEG (Parsing Expression Grammars) library
HCSR04 - Arduino library for HC-SR04, HC-SRF05, DYP-ME007, BLJ-ME007Y, JSN-SR04T ultrasonic ranging sensor
aoc2021 - Advent of Code 2021
RE2 - RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
tinyformat - Minimal, type safe printf replacement library for C++
cpplinq - LINQ for C++ (cpplinq) is an extensible C++11 library of higher-order functions for range manipulation. cpplinq draws inspiration from LINQ for C#.
libflow