Determines whether or not the number of elements in the sequence is equal to the given limit.

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• Definition
• Overloads
• Exactly(int limit)

Determines whether or not the number of elements in the sequence is equal to the given limit.

public static bool Exactly<T>(this IEnumerable<T> source, int limit);

T
The type of elements in source

source IEnumerable<T>
The sequence to count the elements of.

limitInt32
The number of elements that should exist in source.

Boolean
true if the number of elements is equal to limit, false otherwise.

ArgumentNullException
source is null

ArgumentOutOfRangeException
limit is less than zero

The following code example demonstrates how to use Exactly(int limit) to validate the number of elements in a sequence.

Array.Empty<int>().Exactly(0);
//=> true

Array.Empty<int>().Exactly(1);
//=> false

new int[] { 1 }.Exactly(0);
//=> false

new int[] { 1 }.Exactly(1);
//=> true