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std::ranges::take_while_view::take_while_view(3) C++ Standard Libary std::ranges::take_while_view::take_while_view(3)

NAME

std::ranges::take_while_view::take_while_view - std::ranges::take_while_view::take_while_view

Synopsis


take_while_view() requires std::default_initializable<V> &&
std::default_initializable<Pred> = (1) (since C++20)
default;
constexpr explicit take_while_view( V base, Pred pred ); (2) (since C++20)


Constructs a take_while_view.


1) Default constructor. Value-initializes the underlying view and the predicate.
2) Move constructs the underlying view from base and the predicate from pred.

Parameters


base - underlying view
fun - predicate

Example


This section is incomplete
Reason: no example


Defect reports


The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.


DR Applied to Behavior as published Correct behavior
LWG 3714 C++20 the multi-parameter constructor was made explicit
(P2711R1) not explicit
if Pred is not
default_initializable, the default the take_while_view is also
P2325R3 C++20 constructor not default_initializable
constructs a take_while_view which
does not contain an Pred

Category:


* Todo no example

2024.06.10 http://cppreference.com