ChooseExtension Methods | 
The ChooseExtension type exposes the following members.
| Name | Description | |
|---|---|---|
| ChooseT, TResult | 
            Applies a function to each element of the source sequence and
            returns a new sequence of result elements for source elements
            where the function returns a couple (2-tuple) having a true
            as its first element and result as the second.
              |