date
STL
date | STL | |
---|---|---|
24 | 154 | |
3,044 | 9,763 | |
- | 1.5% | |
5.5 | 9.7 | |
17 days ago | 2 days ago | |
C++ | C++ | |
GNU General Public License v3.0 or later | 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.
date
-
Ask HN: Did you encounter any Leap Year bugs today? How bad was it?
> but I'd be surprised if there was not a modern date library for C++
The standard library now includes . AFAIK: It was mostly written by Howard Hinnant. He now has more date/time libs that expand upon : https://github.com/HowardHinnant/date
-
Why no std::chrono::year_month_day::operatator+=(const std::chrono::days&)?
Ah: https://github.com/HowardHinnant/date/issues/178 https://stackoverflow.com/questions/62734974/how-do-i-add-a-number-of-days-to-a-date-in-c20-chrono
-
Converting text to std::chrono::timepoint
If you’re using an earlier standard you can use this, which the ‘official’ date/time zone stuff was based on: https://github.com/HowardHinnant/date
-
std::chrono Calculating an ordinal date and get the week number from an ordinal date
If you don't have C++20, or if your vendor hasn't shipped it yet, here is a free, open-source, header-only preview of this part of C++20 that you can use: https://github.com/HowardHinnant/date
-
Libstdc++ Gets C++20 Chrono
C++20 adds the timezone/caldendaring/formatting from Howard Hinnat’s Date Library https://github.com/howardhinnant/date .
So calendrical calculations and time zone support.
-
need help with constructing time with std::chrono
Unfortunately only implemented in MSVC right now, for other compilers and/or if you want to do anything with dates I suggest you use https://github.com/HowardHinnant/date directly, chrono is good enough for measuring time but if you do more complex things it can get a bit wild.
- Is there a port of the C++20 chrono library to C++17? MSVC and GCC
-
Is there any Date library like datetime from python
Here is the original calendar library that was adopted in C++20 (corrected link).
-
How to get epoch time to a specific date in C++? (Using std::chrono)
In lower C++ standards I would highly recommend including this as a header-only library: https://github.com/HowardHinnant/date. This was the basis for the new date/timezone functionality in C++20, so it's nearly identical and works down to C++11.
-
working with std::chrono
So you want date time functionality? Those come with c++20 otherwise you can use this. The author Howard Hinnant is the author of c++ chrono had have a few excellent video on YouTube explaining how to use chrono.
STL
-
Show HN: Logfmtxx – Header only C++23 structured logging library using logfmt
Again, they are barely functional.
MSVC chokes on many standard-defined constructs: https://github.com/microsoft/STL/issues/1694
clang does not claim to be "mostly usable" at all - most papers are not implemented: https://clang.llvm.org/cxx_status.html#cxx20
And gcc will only start ot be usable with CMake when version 14 is released - that has not happened yet.
And, as I mentioned before, IDE support is either buggy (Visual Studio) or non-existing (any other IDE/OS). So you're off to writing in a text editor and hoping your compiler works to a somewhat usable degree. Yes, at some point people should start using modules, I agree, but to advise library maintainers to ship modularized code... the tooling just isn't there yet.
I mean, the GitHub issue is Microsoft trying to ship their standard library modularized, they employ some of the most capable folks on the planet and pay them big money to get that done, while metaphorically sitting next to the Microsoft compiler devs, and they barely, barely get it done (with bugs, as they themselves mention). This is too much for most other library maintainers.
-
Cpp2 and cppfront – An experimental 'C++ syntax 2' and its first compiler
Notice that there are in practice three distinct implementations of the C++ standard library. They're all awful to read though, here's Microsoft's std::vector https://github.com/microsoft/STL/blob/main/stl/inc/vector
However you're being slightly unfair because Rust's Vec is just defined (opaquely) as a RawVec plus a length value, so let's link RawVec, https://doc.rust-lang.org/src/alloc/raw_vec.rs.html -- RawVec is the part responsible for the messy problem of how to actually implement the growable array type.
Still, the existence of three C++ libraries with slightly different (or sometimes hugely different) quality of implementation means good C++ code can't depend on much beyond what the ISO document promises, and yet it must guard against the nonsense inflicted by all three and by lacks of the larger language. In particular everything must use the reserved prefix so that it's not smashed inadvertently by a macro, and lots of weird C++ idioms that preserve performance by sacrificing clarity of implementation are needed, even where you'd ordinarily sacrifice to get the development throughput win of everybody know what's going on. For example you'll see a lot of "pair" types bought into existence which are there to squirrel away a ZST that in C++ can't exist, using the Empty Base Optimisation. In Rust the language has ZSTs so they can just write what they meant.
- C++ Specification vs Implementation
-
C++23: Removing garbage collection support
Here is Microsoft's implementation of map in the standard library. I think of myself as a competent programmer / computer scientist. I couldn't write this: https://github.com/microsoft/STL/blob/f392449fb72d1a387ac502...
-
std::condition_variable wait for (very) long time
Be careful on Windows, the MSVC STL implementation uses the system time, so it can be badly impacted by clock adjustments: https://github.com/microsoft/STL/issues/718
-
Compiler explorer: can you use C++23 std lib modules with MSVC already?
Can you provide a link? If it affects import std;, I'd like to add it to my tracking issue.
- Learn to write production quality STL like classes
-
MSVC C++23 Update
Do you have a list of the bugs you've filed and their current status, like the one I have for the STL? I saw you mentioned 3 bugs 7 months ago, 2 of which were fixed in 17.6 and the third of which was a duplicate of an active bug ("deducing this" is known to not yet work with modules, which is why we don't define the feature-test macro to claim full support).
- C++/CLI wrap of a C++ class that includes <future> in public header
-
Has Boost lost its charm?
Yep. And look at our implementation's name: https://github.com/microsoft/STL
What are some alternatives?
pandas_market_calendars - Exchange calendars to use with pandas for trading applications
EA Standard Template Library - EASTL stands for Electronic Arts Standard Template Library. It is an extensive and robust implementation that has an emphasis on high performance.
abseil-cpp - Abseil Common Libraries (C++)
asio - Boost.org asio module
rescript-date - 📆 Date manipulation in ReScript.
robin-hood-hashing - Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20
zeitkatze - time cat -- literally. Available as AUR package
tracy - Frame profiler
nepali-datetime - Python's core datetime inspired Bikram Sambat (BS date) & Nepal Time (NPT) package🇳🇵
gcc
DataFrame - C++ DataFrame for statistical, Financial, and ML analysis -- in modern C++ using native types and contiguous memory storage
llvm-project - The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.