Index<T>.Lookup Method
Definition
Namespace: Extreme.DataAnalysis
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23
Overload List
Lookup( | Maps a sequence of keys to their position in the index. |
Lookup( | Maps the specified key to its position in the index. |
Lookup(IEnumerable<T>)
Maps a sequence of keys to their position in the index.
public virtual int[] Lookup(
IEnumerable<T> values
)
Parameters
- values IEnumerable<T>
- A sequence of keys to locate in the index.
Return Value
Int32[]An array containing the mapped position of the elements of values. If the key was found in the index, then the mapped position is the zero-based position of the first occurance of the value in the index; otherwise the mapped position is -1.
Lookup(T)
Maps the specified key to its position in the index.
public int Lookup(
T key
)
Parameters
- key T
- The key to locate.
Return Value
Int32If key was found in the index, the zero-based position of the key in the index; otherwise -1.