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Fix extension docs #1178

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Oct 27, 2016
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Fix extension docs #1178

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8 changes: 5 additions & 3 deletions docs/fsharp/language-reference/type-extensions.md
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Expand Up @@ -70,7 +70,9 @@ static member Method<T>(this T input, T other)
This approach is particularly useful when the generic type parameter is constrained. Further, you can now declare extension members like this in F# code and define an additional, semantically rich set of extension methods. In F#, you usually define extension members as the following example shows:

```fsharp
type seq<’T> with
open System.Collections.Generic

type IEnumerable<'T> with
/// Repeat each element of the sequence n times
member xs.RepeatElements(n: int) =
seq { for x in xs do for i in 1 .. n do yield x }
Expand All @@ -84,7 +86,7 @@ Consider the following declaration:
[<Extension>]
type ExtraCSharpStyleExtensionMethodsInFSharp () =
[<Extension>]
static member inline Sum(xs: seq<’T>) = Seq.sum xs
static member inline Sum(xs: IEnumerable<'T>) = Seq.sum xs
```

By using this declaration, you can write code that resembles the following sample.
Expand All @@ -102,4 +104,4 @@ In this code, the same generic arithmetic code is applied to lists of two types
## See Also
[F# Language Reference](index.md)

[Members](members/index.md)
[Members](members/index.md)