Map.add<'Key,'T> Function (F#)
Returns a new map with the binding added to the given map.
Namespace/Module Path: Microsoft.FSharp.Collections.Map
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
Map.add : 'Key -> 'T -> Map<'Key,'T> -> Map<'Key,'T> (requires comparison)
// Usage:
Map.add key value table
Parameters
key
Type: 'KeyThe input key.
value
Type: 'TThe input value.
table
Type: Map<'Key,'T>The input map.
Return Value
The resulting map.
Remarks
This function is named Add in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.
Example
The following code example shows how to use Map.add.
Map.ofList [ (1, "one"); (2, "two"); (3, "three") ]
|> Map.add(0) "zero"
|> Map.iter (fun key value -> printfn "key: %d value: %s" key value)
Output
key: 0 value: zero key: 1 value: one key: 2 value: two key: 3 value: three
Platforms
Windows 8, Windows 7, Windows Server 2012, Windows Server 2008 R2
Version Information
F# Core Library Versions
Supported in: 2.0, 4.0, Portable