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Add Option.bindLens function. #7

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Add Option.bindLens function. #7

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5 changes: 4 additions & 1 deletion src/Freya.Core/Prelude.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -109,6 +109,9 @@ module Option =
let mapLens (l: Lens<'a,'b>) : Prism<'a option,'b> =
Option.map (fst l), snd l >> Option.map

let bindLens (p : Lens<'a, 'b option>) : Lens<'a option, 'b option> =
Option.bind (fst p), snd p >> Option.map

// Constants

/// Literal constants for the values of keys within the OWIN environment,
Expand Down Expand Up @@ -309,4 +312,4 @@ module Constants =
let [<Literal>] ClientCloseStatus = "websocket.ClientCloseStatus"

[<CompiledName ("ClientCloseDescription")>]
let [<Literal>] ClientCloseDescription = "websocket.ClientCloseDescription"
let [<Literal>] ClientCloseDescription = "websocket.ClientCloseDescription"