ImmutableList<T>.IndexOf Method

Definition

Overloads

IndexOf(T)

Searches for the specified object and returns the zero-based index of the first occurrence within the entire immutable list.

IndexOf(T, Int32, Int32, IEqualityComparer<T>)

Searches for the specified object and returns the zero-based index of the first occurrence within the range of elements in the list that starts at the specified index and contains the specified number of elements.

IndexOf(T)

Searches for the specified object and returns the zero-based index of the first occurrence within the entire immutable list.

public:
 virtual int IndexOf(T value);
public int IndexOf (T value);
abstract member IndexOf : 'T -> int
override this.IndexOf : 'T -> int
Public Function IndexOf (value As T) As Integer

Parameters

value
T

The object to locate in the immutable list. The value can be null for reference types.

Returns

The zero-based index of the first occurrence of value within the entire immutable list, if found; otherwise, ?1.

Implements

IndexOf(T, Int32, Int32, IEqualityComparer<T>)

Searches for the specified object and returns the zero-based index of the first occurrence within the range of elements in the list that starts at the specified index and contains the specified number of elements.

public:
 virtual int IndexOf(T item, int index, int count, System::Collections::Generic::IEqualityComparer<T> ^ equalityComparer);
public int IndexOf (T item, int index, int count, System.Collections.Generic.IEqualityComparer<T> equalityComparer);
abstract member IndexOf : 'T * int * int * System.Collections.Generic.IEqualityComparer<'T> -> int
override this.IndexOf : 'T * int * int * System.Collections.Generic.IEqualityComparer<'T> -> int
Public Function IndexOf (item As T, index As Integer, count As Integer, equalityComparer As IEqualityComparer(Of T)) As Integer

Parameters

item
T

The object to locate in the list The value can be null for reference types.

index
Int32

The zero-based starting index of the search. 0 (zero) is valid in an empty list.

count
Int32

The number of elements in the section to search.

equalityComparer
IEqualityComparer<T>

The equality comparer to use in the search.

Returns

The zero-based index of the first occurrence of item within the range of elements in the list that starts at index and contains count number of elements, if found; otherwise, -1.

Implements

Applies to