How to read cppreference.com site and understand it?
Feb 20, 2025 · How to read cppreference.com site and understand it? [closed] Asked 9 months ago Modified 9 months ago Viewed 514 times
c++ - How to efficiently get a `string_view` for a substring of `std ...
Sep 4, 2017 · @sehe so the upshot of my alarmist ranting in the cpporg group is that no-one else seems to think that string_view is a problem. The answer seems to be, "just never return a …
What is the <=> ("spaceship", three-way comparison) operator in …
Nov 24, 2017 · It qualifies the <=> operator with the (since C++20) label, telling you which version of the standard to expect it in. Standards labeling is a convention that cppreference.com …
Why use std::ranges algorithms over regular algorithms?
Mar 10, 2023 · 11 cppreference states: The ranges library is an extension and generalization of the algorithms and iterator libraries that makes them more powerful by making them …
What is a bfloat16_t in the C++23 standard? - Stack Overflow
Oct 7, 2022 · Cppreference documents that stdfloat includes 5 new types: float16_t, float32_t, float64_t, float128_t and bfloat16_t. While the first 4 types are self-explanatory (a float with 16, …
std::hive container in the upcoming c++ standard - Stack Overflow
Apr 18, 2025 · It seems C++26 will introduce a new container called std::hive, but there is no documentation of it yet. The paper has been integrated into the latest C++ working draft, but …
What are rvalues, lvalues, xvalues, glvalues, and prvalues?
Aug 30, 2010 · Thanks, this answer is really helpful! But my compiler doesn't agree with your examples for xvalues and prvalues; they are the exact opposite. Returning by rvalue reference …
c++ - What does ##__VA_ARGS__ mean? - Stack Overflow
Oct 19, 2018 · Note: some compilers offer an extension that allows ## to appear after a comma and before __VA_ARGS__, in which case the ## does nothing when the variable arguments …
c++ - Why use a mutex and not a semaphore? - Stack Overflow
Apr 27, 2025 · As has been pointed out in the comments, cppreference merely hints at a potential performance difference between the counted and binary semaphore. In general, mutex and …
c++ - std::future in simple words? - Stack Overflow
Dec 28, 2021 · I saw the uses of std::future in the program written in C++. So, I quickly went to lookup what is is: std::future and got a quite complicated answer for me. Can someone put it in …