DestroyInstance()

MfSingletonBase.DestroyInstance()

DestroyInstance()

Sets current instance of singleton derived class to null.
Abstract Method.

Throws

Throws MfNotImplementedException if not implemented in derived class.

Remarks

DestroyInstance() is an abstract method and must be implemented in derived class.

Example

MsgBox % SingletonHello.Instance.Message
SingletonHello.Instance.Value := "Way too cool!"
MsgBox % SingletonHello.Instance.Message

ExitApp

class SingletonHello extends MfSingletonBase
{
   static _instance := Null ; Static var to contain the singleton instance
   m_Value  := Null
   __New() {
       base.__New()
       this.m_Value  := "Hello World"
   }

   ; GetInstance() is required to be overridden from the SingletonBase base class
   GetInstance() { ; Overrides base
   if (MfNull.IsNull(SingletonHello._instance)) {
       SingletonHello._instance := new SingletonHello()
   }
   return SingletonHello._instance
   }

   ; DestroyInstance() is required to be overridden from the SingletonBase base class
   DestroyInstance() {
       SingletonHello._instance := Null ; Clears current instance and releases memory
   }

   ; Properties Start
   Value[]
   {
       get {
           return this.m_Value
       }
       set {
                         this.m_Value := value
           return this.m_Value
       }
   }

   Message[]
   {
       get {
           return MfString.Format("The Value is currently:'{0}'", this.Value)
       }
       set { ; Read-only Property
           ex := new MfNotSupportedException(MfEnvironment.Instance.GetResourceString("NotSupportedException_readonly_Property"))
           ex.SetProp(A_LineFile, A_LineNumber, A_ThisFunc)
           throw ex
       }
   }
   ; Properties End
}