PureAttribute Class
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Indicates that a type or method is pure, that is, it does not make any visible state changes.
Inheritance Hierarchy
System.Object
System.Attribute
System.Diagnostics.Contracts.PureAttribute
Namespace: System.Diagnostics.Contracts
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<ConditionalAttribute("CONTRACTS_FULL")> _
<AttributeUsageAttribute(AttributeTargets.Class Or AttributeTargets.Constructor Or AttributeTargets.Method Or AttributeTargets.Property Or AttributeTargets.Event Or AttributeTargets.Parameter Or AttributeTargets.Delegate, AllowMultiple := False, _
Inherited := True)> _
Public NotInheritable Class PureAttribute _
Inherits Attribute
[ConditionalAttribute("CONTRACTS_FULL")]
[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Constructor|AttributeTargets.Method|AttributeTargets.Property|AttributeTargets.Event|AttributeTargets.Parameter|AttributeTargets.Delegate, AllowMultiple = false,
Inherited = true)]
public sealed class PureAttribute : Attribute
The PureAttribute type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
PureAttribute | Initializes a new instance of the PureAttribute class. |
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Methods
| Name | Description | |
|---|---|---|
|
Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
|
GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
|
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
|
ToString | Returns a string that represents the current object. (Inherited from Object.) |
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Remarks
Methods and types that are marked with this attribute can be used in calls to System.Diagnostics.Contracts.Contract methods. Pure methods do not make any visible state changes. This attribute is not enforced by the current analysis tools; you should use this attribute only if you are sure that the methods are pure.
Version Information
Silverlight
Supported in: 5, 4
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.