Hashtable Constructor (Int32, Single, IHashCodeProvider, IComparer)
Initializes a new, empty instance of the Hashtable class using the specified initial capacity, load factor, hash code provider, and comparer.
Assembly: mscorlib (in mscorlib.dll)
[<ObsoleteAttribute("Please use Hashtable(int, float, IEqualityComparer) instead.")>] new : capacity:int * loadFactor:float32 * hcp:IHashCodeProvider * comparer:IComparer -> Hashtable
The approximate number of elements that the Hashtable object can initially contain.
A number in the range from 0.1 through 1.0 that is multiplied by the default value which provides the best performance. The result is the maximum ratio of elements to buckets.
null to use the default hash code provider, which is each key's implementation of Object.GetHashCode.
capacity is less than zero.
loadFactor is less than 0.1.
loadFactor is greater than 1.0.
Specifying the initial capacity eliminates the need to perform a number of resizing operations while adding elements to the Hashtable object. Capacity is automatically increased as required based on the load factor.
The load factor is the maximum ratio of elements to buckets. A smaller load factor means faster lookup at the cost of increased memory consumption. A load factor of 1.0 is the best balance between speed and size.
When the actual load factor reaches the specified load factor, the number of buckets is automatically increased to the smallest prime number that is larger than twice the current number of buckets.
The custom hash code provider and the custom comparer enable scenarios such as doing lookups with case-insensitive strings.
This constructor is an O(n) operation, where n is the capacity parameter.
Available since 1.1