Method CountBetween

CountBetween<T>(IEnumerable<T>, int, int)

Determines whether or not the number of elements in the sequence is between an inclusive range of minimum and maximum integers.

Declaration

public static bool CountBetween<T>(this IEnumerable<T> source, int min, int max)

Parameters

Type	Name	Description
IEnumerable<T>	source	The source sequence
int	min	The minimum number of items a sequence must have for this function to return true.
int	max	The maximum number of items a sequence must have for this function to return true.

Returns

Type	Description
bool	true if the number of elements in the sequence is between (inclusive) the min and max given integers, false otherwise.

Type Parameters

Name	Description
T	Element type of sequence

Remarks

This method executes immediately.

Examples

The following code example demonstrates how to check that a sequence length is between two numbers using CountBetween

var sequence = Enumerable.Range(1, 5);
            
foreach (var x in Enumerable.Range(3, 5))
{
    // Check that a sequence has a length between two numbers
    var result = sequence.CountBetween(x, x + 1);

    Console.WriteLine($"CountBetween {x}-{x + 1}: {result}");
}

// This code produces the following output:
// CountBetween 3-4: False
// CountBetween 4-5: True
// CountBetween 5-6: True
// CountBetween 6-7: False
// CountBetween 7-8: False

Exceptions

Type	Condition
ArgumentNullException	source is null.
ArgumentOutOfRangeException	min is negative, or max is less than min.