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std::ssize is a C++20 function template that returns the size information of the passed-in range or array as a signed integer (typically std::ptrdiff_t).
The range version std::ranges::ssize instead uses the range-style "customization point object" approach while maintaining the same functionality.
This allows for simpler code when working with raw indexes.
Compiler Explorer: https://compiler-explorer.com/z/631n3P9vK
modules addict) @simontoth
"This allows for simpler code when working with raw indexes."
Something I totally despise.
This is no longer C++ from the past millenium.
@DanielaKEngert Indeed, but doing things like a 3x3 view around a coordinate in a 2D grid using views is incredibly cumbersome and would involve indices anyway.