std::extrem...distribution(3)

🌸 NAME 🌸

std::extreme_value_distribution::extreme_value_distribution — aka std::extreme_value_distribution::extreme_value_distribution, because this page really said the name twice and honestly? Iconic. We're on the std::extrem...distribution(3) page from the C++ Standard Library manual, and today's topic is the constructor itself, bestie 💖.

✨ Synopsis ✨

Three constructor flavors, all (since C++11), all giving very specific main-character energy:

extreme_value_distribution() : extreme_value_distribution(0.0) {}

(1) (since C++11)

explicit extreme_value_distribution( RealType a, RealType b = 1.0 );

(2) (since C++11)

explicit extreme_value_distribution( const param_type& params );

(3) (since C++11)

Constructs a new distribution object. That's the whole assignment, no cap 🫶.

• (1) is the no-arg one, and its initializer calls extreme_value_distribution(0.0).
• (2) uses a and b as the distribution parameters.
• (3) uses params as the distribution parameters.

🎀 Parameters 🎀

• a — the a distribution parameter (location) 📍
• b — the b distribution parameter (scale) 📏
• params — the distribution parameter set 🎁

💅 Defect reports 💅

The following behavior-changing defect reports were applied retroactively to previously published C++ standards — periodt.

• DR: P0935R0
• Applied to: C++11
• Behavior as published: default constructor was explicit
• Correct behavior: made implicit

So the default constructor got that glow-up from explicit to implicit, and we love that for it 😭✨.

Source/version shoutout: http://cppreference.com, dated 2024.06.10, on the std::extrem...distribution(3) page 💅💖