Lens (Nu) | Nu

Lens Module

Namespace: Nu
Assembly: Nu.dll

Lens functions.

Functions and values

Function or value	Description
`Lens.changeEvent lens` Full Usage: `Lens.changeEvent lens` Parameters: lens : `Lens<'a, 's>` Returns: `ChangeData Address` Modifiers: inline Type parameters: 'a, 's	The change event associated with the lensed property. lens : `Lens<'a, 's>` Returns: `ChangeData Address`
`Lens.get lens world` Full Usage: `Lens.get lens world` Parameters: lens : `Lens<'a, 's>` world : `World` Returns: `'a` Modifiers: inline Type parameters: 'a, 's	Get the value of a lensed property. lens : `Lens<'a, 's>` world : `World` Returns: `'a`
`Lens.getBy by lens world` Full Usage: `Lens.getBy by lens world` Parameters: by : `'a -> 'b` lens : `Lens<'a, 's>` world : `World` Returns: `'b` Modifiers: inline Type parameters: 'a, 'b, 's	Get the lensed value mapped by the `by` function. by : `'a -> 'b` lens : `Lens<'a, 's>` world : `World` Returns: `'b`
`Lens.getByPlus by lens world` Full Usage: `Lens.getByPlus by lens world` Parameters: by : `'a -> World -> 'b` lens : `Lens<'a, 's>` world : `World` Returns: `'b` Modifiers: inline Type parameters: 'a, 'b, 's	Get the lensed value mapped by the `by` function that includes the world value in its input. by : `'a -> World -> 'b` lens : `Lens<'a, 's>` world : `World` Returns: `'b`
`Lens.make name this get set` Full Usage: `Lens.make name this get set` Parameters: name : `string` this : `'s` get : `World -> 'a` set : `'a -> World -> unit` Returns: `Lens<'a, 's>`	Make a writable lens. name : `string` this : `'s` get : `World -> 'a` set : `'a -> World -> unit` Returns: `Lens<'a, 's>`
`Lens.makeReadOnly name this get` Full Usage: `Lens.makeReadOnly name this get` Parameters: name : `string` this : `'s` get : `World -> 'a` Returns: `Lens<'a, 's>`	Make a read-only lens. name : `string` this : `'s` get : `World -> 'a` Returns: `Lens<'a, 's>`
`Lens.map mapper lens world` Full Usage: `Lens.map mapper lens world` Parameters: mapper : `'a -> 'a` lens : `Lens<'a, 's>` world : `World` Modifiers: inline Type parameters: 'a, 's	Update the lensed property's value using the given mapper function. Throws an exception if the lens is readonly. mapper : `'a -> 'a` lens : `Lens<'a, 's>` world : `World`
`Lens.mapPlus mapper lens world` Full Usage: `Lens.mapPlus mapper lens world` Parameters: mapper : `'a -> World -> 'a` lens : `Lens<'a, 's>` world : `World` Modifiers: inline Type parameters: 'a, 's	Update the lensed property's value using the given mapper function that also receives the world as input. Throws an exception if the lens is readonly. mapper : `'a -> World -> 'a` lens : `Lens<'a, 's>` world : `World`
`Lens.name lens` Full Usage: `Lens.name lens` Parameters: lens : `Lens<'a, 's>` Returns: `string` Modifiers: inline Type parameters: 'a, 's	Get the name of a lens. lens : `Lens<'a, 's>` Returns: `string`
`Lens.set a lens world` Full Usage: `Lens.set a lens world` Parameters: a : `'a` lens : `Lens<'a, 's>` world : `World` Modifiers: inline Type parameters: 'a, 's	Set the lensed property to the given value. Throws an exception if the lens is readonly. a : `'a` lens : `Lens<'a, 's>` world : `World`
`Lens.tryMap mapper lens world` Full Usage: `Lens.tryMap mapper lens world` Parameters: mapper : `'a -> 'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool` Modifiers: inline Type parameters: 'a, 's	Attempt to transform the lensed property's value using the given mapper function. mapper : `'a -> 'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool`
`Lens.tryMapPlus mapper lens world` Full Usage: `Lens.tryMapPlus mapper lens world` Parameters: mapper : `'a -> World -> 'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool` Modifiers: inline Type parameters: 'a, 's	Attempt to transform the lensed property's value using the given mapper function that also receives the world as input. mapper : `'a -> World -> 'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool`
`Lens.trySet a lens world` Full Usage: `Lens.trySet a lens world` Parameters: a : `'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool` Modifiers: inline Type parameters: 'a, 's	Attempt to set the lensed property to the given value. a : `'a` lens : `Lens<'a, 's>` world : `World` Returns: `bool`
`Lens.ty lens` Full Usage: `Lens.ty lens` Parameters: lens : `Lens<'a, 's>` Returns: `Type` Modifiers: inline Type parameters: 'a, 's	The type of the lensed property. lens : `Lens<'a, 's>` Returns: `Type`