std::ranges::transform_view<V,F>::iterator<Const>::operator[]

Ranges library

begin
cbegin
end
cend

rbegin
crbegin
rend
crend

size
ssize
data
cdata

empty

Range conversions
std::from_range_t std::from_range (C++23)(C++23)
to (C++23)

Dangling iterator handling
dangling
borrowed_iterator_t
borrowed_subrange_t

Range primitives

range_size_trange_difference_trange_value_t
elements_of (C++23)

iterator_tconst_iterator_tsentinel_tconst_sentinel_t

(C++23)(C++23)

range_reference_trange_const_reference_trange_rvalue_reference_trange_common_reference_t

(C++23)

Range concepts

range
borrowed_range
sized_range

common_range
view
viewable_range

input_range
output_range
forward_range

bidirectional_range
random_access_range
contiguous_range

constant_range (C++23)

empty_viewviews::empty

single_viewviews::single

basic_istream_viewviews::istream

iota_viewviews::iota

repeat_viewviews::repeat

(C++23)(C++23)

Range adaptors

views::all_tviews::all
ref_view
owning_view
as_rvalue_viewviews::as_rvalue (C++23)(C++23)
filter_viewviews::filter
transform_viewviews::transform
take_viewviews::take
take_while_viewviews::take_while
concat_viewviews::concat (C++26)(C++26)
views::counted

drop_viewviews::drop
drop_while_viewviews::drop_while
join_viewviews::join
join_with_viewviews::join_with (C++23)(C++23)
lazy_split_viewviews::lazy_split
split_viewviews::split
common_viewviews::common
cache_latest_viewviews::cache_latest (C++26)(C++26)

reverse_viewviews::reverse
as_const_viewviews::as_const (C++23)(C++23)
elements_viewviews::elements
keys_viewviews::keys
values_viewviews::values
enumerate_viewviews::enumerate (C++23)(C++23)
zip_viewviews::zip (C++23)(C++23)
zip_transform_viewviews::zip_transform (C++23)(C++23)

adjacent_viewviews::adjacent (C++23)(C++23)
views::pairwise (C++23)
adjacent_transform_viewviews::adjacent_transform (C++23)(C++23)
views::pairwise_transform (C++23)
chunk_viewviews::chunk (C++23)(C++23)
slide_viewviews::slide (C++23)(C++23)
chunk_by_viewviews::chunk_by (C++23)(C++23)
stride_viewviews::stride (C++23)(C++23)
cartesian_product_viewviews::cartesian_product (C++23)(C++23)

Range generators
std::generator (C++23)

Range adaptor closure objects
range_adaptor_closure (C++23)

Range adaptor objects

Helper items

copyable-box
movable-box

(until C++23)(C++23)

simple-view
non-propagating-cache

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

Returns the element at specified relative location, after transformation.

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.

Return value

the transformed element

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution support library (C++26)
Technical specifications
Symbols index
External libraries

Member functions
transform_view::transform_view
transform_view::base
transform_view::begin
transform_view::end
transform_view::size
Deduction guides
Iterator
transform_view::iterator::iterator
transform_view::iterator::base
transform_view::iterator::operator*
*transform_view::iterator::operator[]*
transform_view::iterator::operator++ transform_view::iterator::operator++(int) transform_view::iterator::operator-- transform_view::iterator::operator--(int) transform_view::iterator::operator+= transform_view::iterator
operator==(transform_view::iterator) operator<(transform_view::iterator) operator>(transform_view::iterator) operator<=(transform_view::iterator) operator>=(transform_view::iterator) operator<=>(transform_view::iterator)
operator+(transform_view::iterator) operator-(transform_view::iterator)
iter_move(transform_view::iterator)
Sentinel
transform_view::sentinel::sentinel
transform_view::sentinel::base
operator==(transform_view::iterator,transform_view::sentinel)
operator-(transform_view::iterator,transform_view::sentinel)

std::ranges::transform_view<V,F>::iterator<Const>::operator[]

Parameters

Return value

Example

Navigation