std::ranges::transform_view<V,F>:: begin

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Ranges library
Range adaptors
constexpr /*iterator*/ < false > begin ( ) ;
(1) (since C++20)
constexpr /*iterator*/ < true > begin ( ) const

requires ranges:: range < const V > &&

std:: regular_invocable < const F & , ranges:: range_reference_t < const V >> ;
(2) (since C++20)

Returns an iterator to the first element of the transform_view .

1) Equivalent to return /*iterator*/ < false > { * this, ranges:: begin ( base_ ) } ; , where base_ is the underlying view.
2) Equivalent to return /*iterator*/ < true > { * this, ranges:: begin ( base_ ) } ; , where base_ is the underlying view.

Parameters

(none)

Return value

Iterator to the first element.

Example

See also

returns an iterator or a sentinel to the end
(public member function)
returns an iterator to the beginning of a range
(customization point object)