Nullable (FSharpx.Extras)

Nullable Module

Namespace: FSharpx
Assembly: FSharpx.Extras.dll

Functions and values

Function or value	Description
`a ? b` Full Usage: `a ? b` Parameters: a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>` Modifiers: inline	a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>`
`a &? b` Full Usage: `a &? b` Parameters: a : `Nullable<bool>` b : `Nullable<bool>` Returns: `Nullable<bool>` Modifiers: inline	a : `Nullable<bool>` b : `Nullable<bool>` Returns: `Nullable<bool>`
`a +? b` Full Usage: `a +? b` Parameters: a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>` Modifiers: inline	a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>`
`a -? b` Full Usage: `a -? b` Parameters: a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>` Modifiers: inline	a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>`
`a /? b` Full Usage: `a /? b` Parameters: a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>` Modifiers: inline	a : `Nullable<^a>` b : `Nullable<^b>` Returns: `Nullable<^c>`
`a <=? b` Full Usage: `a <=? b` Parameters: a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool` Modifiers: inline	a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool`
`a <? b` Full Usage: `a <? b` Parameters: a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool` Modifiers: inline	a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool`
`a >=? b` Full Usage: `a >=? b` Parameters: a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool` Modifiers: inline	a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool`
`a >? b` Full Usage: `a >? b` Parameters: a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool` Modifiers: inline	a : `Nullable<'a>` b : `Nullable<'a>` Returns: `bool`
`a \|? b` Full Usage: `a \|? b` Parameters: a : `Nullable<bool>` b : `Nullable<bool>` Returns: `Nullable<bool>` Modifiers: inline	a : `Nullable<bool>` b : `Nullable<bool>` Returns: `Nullable<bool>`
`bind f x` Full Usage: `bind f x` Parameters: f : `'a -> Nullable<'b>` x : `Nullable<'a>` Returns: `Nullable<'b>`	Monadic bind f : `'a -> Nullable<'b>` x : `Nullable<'a>` Returns: `Nullable<'b>`
`count x` Full Usage: `count x` Parameters: x : `Nullable<'a>` Returns: `int`	Returns 1 if Nullable has value, otherwise 0 x : `Nullable<'a>` Returns: `int`
`create x` Full Usage: `create x` Parameters: x : `'a` Returns: `Nullable<'a>`	x : `'a` Returns: `Nullable<'a>`
`exists p x` Full Usage: `exists p x` Parameters: p : `Nullable<'a> -> bool` x : `Nullable<'a>` Returns: `bool`	Evaluates the equivalent of List.exists for a nullable. p : `Nullable<'a> -> bool` x : `Nullable<'a>` Returns: `bool`
`fold f state x` Full Usage: `fold f state x` Parameters: f : `'a -> 'b -> 'a` state : `'a` x : `Nullable<'b>` Returns: `'a`	Evaluates the equivalent of List.fold for a nullable. f : `'a -> 'b -> 'a` state : `'a` x : `Nullable<'b>` Returns: `'a`
`foldBack f x state` Full Usage: `foldBack f x state` Parameters: f : `Nullable<'a> -> 'b -> 'b` x : `Nullable<'a>` state : `'b` Returns: `'b`	Performs the equivalent of the List.foldBack operation on a nullable. f : `Nullable<'a> -> 'b -> 'b` x : `Nullable<'a>` state : `'b` Returns: `'b`
`forall p x` Full Usage: `forall p x` Parameters: p : `Nullable<'a> -> bool` x : `Nullable<'a>` Returns: `bool`	Evaluates the equivalent of List.forall for a nullable. p : `Nullable<'a> -> bool` x : `Nullable<'a>` Returns: `bool`
`get x` Full Usage: `get x` Parameters: x : `Nullable<'a>` Returns: `'a`	Gets the value associated with the Nullable. If no value, throws. x : `Nullable<'a>` Returns: `'a`
`getOrDefault n v` Full Usage: `getOrDefault n v` Parameters: n : `Nullable<'a>` v : `'a` Returns: `'a`	Gets the value associated with the nullable or the supplied default value. n : `Nullable<'a>` v : `'a` Returns: `'a`
`getOrElse n v` Full Usage: `getOrElse n v` Parameters: n : `Nullable<'T>` v : `Lazy<'T>` Returns: `'T`	Gets the value associated with the nullable or the supplied default value. n : `Nullable<'T>` v : `Lazy<'T>` Returns: `'T`
`hasValue x` Full Usage: `hasValue x` Parameters: x : `Nullable<'a>` Returns: `bool`	True if Nullable has value x : `Nullable<'a>` Returns: `bool`
`isNull x` Full Usage: `isNull x` Parameters: x : `Nullable<'a>` Returns: `bool`	True if Nullable does not have value x : `Nullable<'a>` Returns: `bool`
`iter f x` Full Usage: `iter f x` Parameters: f : `'a -> unit` x : `Nullable<'a>`	Executes a function for a nullable value. f : `'a -> unit` x : `Nullable<'a>`
`lift2 f a b` Full Usage: `lift2 f a b` Parameters: f : `'a -> 'b -> 'c` a : `Nullable<'a>` b : `Nullable<'b>` Returns: `Nullable<'c>`	Promote a function to a monad/applicative, scanning the monadic/applicative arguments from left to right. f : `'a -> 'b -> 'c` a : `Nullable<'a>` b : `Nullable<'b>` Returns: `Nullable<'c>`
`map f x` Full Usage: `map f x` Parameters: f : `'a -> 'b` x : `Nullable<'a>` Returns: `Nullable<'b>`	Transforms a Nullable value by using a specified mapping function. f : `'a -> 'b` x : `Nullable<'a>` Returns: `Nullable<'b>`
`mapBool op a b` Full Usage: `mapBool op a b` Parameters: op : `'a -> 'b -> bool` a : `Nullable<'a>` b : `Nullable<'b>` Returns: `bool`	op : `'a -> 'b -> bool` a : `Nullable<'a>` b : `Nullable<'b>` Returns: `bool`
`notn a` Full Usage: `notn a` Parameters: a : `Nullable<bool>` Returns: `Nullable<bool>` Modifiers: inline	a : `Nullable<bool>` Returns: `Nullable<bool>`
`ofOption` Full Usage: `ofOption` Returns: `'a option -> Nullable<'a>`	Converts option to nullable Returns: `'a option -> Nullable<'a>`
`toArray x` Full Usage: `toArray x` Parameters: x : `Nullable<'a>` Returns: `'a[]`	Convert the nullable to an array of length 0 or 1. x : `Nullable<'a>` Returns: `'a[]`
`toList x` Full Usage: `toList x` Parameters: x : `Nullable<'a>` Returns: `'a list`	Convert the nullable to a list of length 0 or 1. x : `Nullable<'a>` Returns: `'a list`
`toOption` Full Usage: `toOption` Returns: `Nullable<'a> -> 'a option`	Converts nullable to option Returns: `Nullable<'a> -> 'a option`

Type extensions

Type extension	Description
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Int32>`	Extended Type: `Int32` () : `unit` Returns: `Nullable<Int32>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Int32>`	Extended Type: `Int32` Returns: `Nullable<Int32>`
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Double>`	Extended Type: `Double` () : `unit` Returns: `Nullable<Double>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Double>`	Extended Type: `Double` Returns: `Nullable<Double>`
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Single>`	Extended Type: `Single` () : `unit` Returns: `Nullable<Single>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Single>`	Extended Type: `Single` Returns: `Nullable<Single>`
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Byte>`	Extended Type: `Byte` () : `unit` Returns: `Nullable<Byte>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Byte>`	Extended Type: `Byte` Returns: `Nullable<Byte>`
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Int64>`	Extended Type: `Int64` () : `unit` Returns: `Nullable<Int64>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Int64>`	Extended Type: `Int64` Returns: `Nullable<Int64>`
`this.n ()` Full Usage: `this.n ()` Parameters: () : `unit` Returns: `Nullable<Decimal>`	Extended Type: `Decimal` () : `unit` Returns: `Nullable<Decimal>`
`this.n` Full Usage: `this.n` Returns: `Nullable<Decimal>`	Extended Type: `Decimal` Returns: `Nullable<Decimal>`

Active patterns

Active pattern Description

Active pattern	Description
`(\|Null\|Value\|) x` Full Usage: `(\|Null\|Value\|) x` Parameters: x : `Nullable<'a>` Returns: `Choice<unit, 'a>`	x : `Nullable<'a>` Returns: `Choice<unit, 'a>`


                
                  
                    
                      (|Null|Value|) x

Full Usage: (|Null|Value|) x

Parameters:

x : Nullable<'a>

Returns: Choice<unit, 'a>

x : Nullable<'a>

Returns: Choice<unit, 'a>