Set.IsProperSubsetOf<'T> Method (F#)
Evaluates to true if all elements of the first set are in the second, and at least one element of the second is not in the first.
Namespace/Module Path: Microsoft.FSharp.Collections
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
member this.IsProperSubsetOf : Set<'T> -> bool (requires comparison)
// Usage:
set.IsProperSubsetOf (otherSet)
Parameters
otherSet
Type: Set<'T>The set to test against.
Return Value
true if this set is a proper subset of otherSet. Otherwise, returns false.
Example
The following code illustrates the use of the IsProperSubsetOf method.
let set1 = Set.ofList [ 1 .. 6 ]
let set2 = Set.ofList [ 1 .. 5 ]
let set3 = Set.ofList [ 1 .. 6 ]
let set4 = Set.ofList [ 5 .. 10 ]
printfn "%A is a proper subset of %A: %b" set2 set1 (set2.IsProperSubsetOf set1)
printfn "%A is a proper subset of %A: %b" set3 set1 (set3.IsProperSubsetOf set1)
printfn "%A is a proper subset of %A: %b" set4 set1 (set4.IsProperSubsetOf set1)
Output
set [1; 2; 3; 4; 5] is a proper subset of set [1; 2; 3; 4; 5; 6]: true set [1; 2; 3; 4; 5; 6] is a proper subset of set [1; 2; 3; 4; 5; 6]: false set [5; 6; 7; 8; 9; 10] is a proper subset of set [1; 2; 3; 4; 5; 6]: false
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