/// Determine whether a value is within an inclusive range
func isValue <T : Comparable>(value: T, inClosedInterval low: T, high: T) -> Bool {
    return low <= value && value <= high
}

/// Determine whether a value is within a half-open range (include bottom but not top)
func isValue <T : Comparable>(value: T, inHalfOpenInterval low: T, high: T) -> Bool {
    return low <= value && value < high
}

/// Determine whether a value is within an exclusive range
func isValue <T : Comparable>(value: T, inOpenInterval low: T, high: T) -> Bool {
    return low < value && value < high
}


// Examples

isValue(10, inClosedInterval: 0, 10)        // true
isValue(10, inHalfOpenInterval: 0, 10)      // false

isValue(0.0001, inOpenInterval: 0.0, 1.0)   // true
isValue(0.9999, inOpenInterval: 0.0, 1.0)   // true
isValue(0.0, inOpenInterval: 0.0, 1.0)      // false
isValue(1.0, inOpenInterval: 0.0, 1.0)      // false