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deduction guides for std::ranges::transform_view

From cppreference.com
 
 
 
 
template< class R, class F >
transform_view( R&&, F ) -> transform_view<views::all_t<R>, F>;
(since C++20)

The deduction guide is provided for std::ranges::transform_view to allow deduction from range and transformation function.

If R is a view, the deduced type is transform_view<R, F>; otherwise, the deduced type is usually transform_view<ranges::ref_view<R>, F>.

[edit] Example