Kieli

Index.GetOffset(Int32) Method

Definition

Namespace:
System
Assemblies:
netstandard.dll, System.Runtime.dll
Assembly:
System.Runtime.dll
Assembly:
Microsoft.Bcl.Memory.dll
Assembly:
netstandard.dll
Package:
Microsoft.Bcl.Memory v11.0.0-rc.2.26504.105
Source:
Index.cs
Source:
Index.cs
Source:
Index.cs
Source:
Index.cs
Source:
Index.cs

Calculate the offset from the start using the giving collection length.

public:
 int GetOffset(int length);
public int GetOffset(int length);
member this.GetOffset : int -> int
Public Function GetOffset (length As Integer) As Integer

Parameters

length
Int32

The length of the collection that the Index will be used with. length has to be a positive value.

Returns

Int32

The offset.

Remarks

For performance reason, we don't validate the input length parameter and the returned offset value against negative values. we don't validate either the returned offset is greater than the input length. It is expected Index will be used with collections which always have non negative length/count. If the returned offset is negative and then used to index a collection will get out of range exception which will be same affect as the validation.

Applies to