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std::meta::is_unbounded_array_type

Defined in header <meta>
consteval bool is_unbounded_array_type( std::meta::info r );
(since C++26)

Returns true if r represents an array type of unknown bound. Otherwise returns false.

Parameters

r - a reflection value

Return value

true if r represents an array type of unknown bound; otherwise false.

Exceptions

Throws std::meta::exception if r does not represent a type or type alias.

Example

#include <meta>

class A {};

static_assert
(""
    && is_unbounded_array_type(^^A) == false
    && is_unbounded_array_type(^^A[]) == true
    && is_unbounded_array_type(^^A[3]) == false
    && is_unbounded_array_type(^^float) == false
    && is_unbounded_array_type(^^int) == false
    && is_unbounded_array_type(^^int[]) == true
    && is_unbounded_array_type(^^int[3]) == false
);

int main() {}

See also

is_bounded_array_type
(C++26)
checks if reflection represents an array type of known bound
(function)
is_array_type
(C++26)
checks if reflected type is an array type
(function)
extent
(C++26)
obtains the size of reflected array type along a specified dimension
(function)
rank
(C++26)
obtains the number of dimensions of reflected array type
(function)
remove_extent
(C++26)
removes one extent from reflected array type
(function)
remove_all_extents
(C++26)
removes all extents from reflected array type
(function)
is_scalar_type
(C++26)
checks if reflected type is a scalar type
(function)
is_unbounded_array
(C++20)
checks if a type is an array type of unknown bound
(class template)

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Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/cpp/meta/is_unbounded_array_type

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