element_at_or_default

Returns nth element in a sequence, or a default value. More...

Functions
template<typename = void>
auto	coveo::linq::element_at_or_default (std::size_t n) -> detail::element_at_or_default_impl<>
	Returns nth element in sequence or default value. More...

Detailed Description

The element_at operator returns the nth element in the sequence. If the sequence does not have enough elements, a default value is returned instead.

This is a terminal operator.

.NET equivalent: ElementAtOrDefault

Function Documentation

element_at_or_default()

template<typename = void>

auto coveo::linq::element_at_or_default

(

std::size_t

n

)

-> detail::element_at_or_default_impl<>

Returns the nth element in a sequence. If the sequence does not have enough elements, a default-initialized value is returned instead.

Use like this:

const int NUMS[] = { 42, 23, 66 };

using namespace coveo::linq;
auto second = from(NUMS)
            | element_at(1);
auto fourth = from(NUMS)
            | element_at(3);
// second == 23
// fourth == 0

Parameters

n	0-based index of element to return.

Returns

(Once applied) nth element in sequence or, if sequence does not have enough elements, a default value.