std::ranges...::operator[](3)

std::ranges...::operator[](3) 💅

okay so bestie, welcome to the C++ Standard Libary manual page for std::ranges::transform_view::iterator::operator[]. yes it's a mouthful, no we're not scared of it. 🫶

🌸 NAME 🌸

std::ranges::transform_view::iterator::operator[] - std::ranges::transform_view::iterator::operator[]

(it's literally giving the same name twice on the page, that's just the layout. slay.)

✨ Synopsis ✨

          constexpr decltype(auto) operator[]( difference_type n ) const
       (since C++20)
            requires ranges::random_access_range<Base>;

so this operator[] is here since C++20, and it's gated by requires ranges::random_access_range<Base>; — that's the requirement, not a vibe I made up. 💅

Returns the element at specified relative location, after transformation. main character behavior honestly. ✨

Effectively returns std::invoke(*parent_->fun_, current_[n]), where *parent_->fun_ is the transformation function stored in the parent transform_view, and current_ is the underlying iterator into V.

🦋 Parameters 🦋

• n — position relative to current location. that's the whole parameter, bestie.

💜 Return value 💜

the transformed element. periodt. 💖

🍓 Example 🍓

This section is incomplete Reason: no example

not me showing up to the example section and it's just a no-example note 😭 iconic honestly.

💅 Category 💅

• Todo no example

xoxo, from http://cppreference.com 💖 dated 2024.06.10 🌸