CPPAlliance

@CPPAlliance

Our mission is to make the C++ programming language accessible and useful to anyone who wishes to learn and apply the language.

CPPAlliance
@CPPAlliance
20h
struct Point { int x, y; }; std::vector<Point> pts; std::ranges::fill(pts, Point{0, 0}); // why do I have to name the type? The compiler knows the element type. You know the element type. You still have to spell it out
4
CPPAlliance
@CPPAlliance
Sep 23
How do you print a blank line? std::cout << '\n'; // C++11 std::println(""); // C++23 std::println(); // C++26 C++23 added println but forgot to let you call it with no arguments
23
CPPAlliance
@CPPAlliance
Sep 22
std::string s = "hello world"; auto sub = s.substr(0, 5); // allocates a new string You wanted a view of the first 5 characters. substr() gave you a heap allocation instead
2
CPPAlliance
@CPPAlliance
Sep 21
auto result = std::from_chars( str.data(), str.data() + str.size(), value); if (result.ec == std::errc{}) // ugh from_chars is the fastest string-to-number conversion in C++. The error check is the ugliest 🧵👇
1
CPPAlliance
@CPPAlliance
Sep 18
Great talk by Arnaud. Contribute to Boost!
Boost C++ | Open Source Libraries
@Boost_Libraries
Sep 18
At CppCon, Arnaud Becheler gave a talk called "The Barrier Is a Myth: Becoming a Boost Maintainer" His point: you don't need to be a compiler expert or a 20 year veteran to contribute. He has a PhD in biology, and he now helps maintain Boost.Graph 🧵👇