Method First

| MongoDB CSharp Driver API Reference (original) (raw)

Namespace

MongoDB.Driver.Linq

Assembly

MongoDB.Driver.dll

First<TInput, TValue>(ISetWindowFieldsPartition, Func<TInput, TValue>, SetWindowFieldsWindow)

Returns the first value.

public static TValue First<TInput, TValue>(this ISetWindowFieldsPartition<TInput> partition, Func<TInput, TValue> selector, SetWindowFieldsWindow window = null)

Parameters

partition ISetWindowFieldsPartition

The partition.

selector Func<TInput, TValue>

The selector that selects a value from the input document.

window SetWindowFieldsWindow

The window boundaries.

Returns

TValue

The first of the selected values.

Type Parameters

TInput

The type of the input documents in the partition.

TValue

The type of the selected values.