C # Func
//Func is a invokeable container for Mehod or function method
//that returns something. They can accept inputs based on the generals
//that you template on and reserve the last general template for the return.
//If you do not need a return or wish to return nothing check out the Action Class
//example:
Func<string/*Or some other type to return*/> YourFuncProperty
= new Func(()=>{/*do something*/ return "or return what you want";});
//or
Func<string/*Or some other type to return*/> YourFuncProperty
= ()=>{/*do something*/return "or return what you want";};
//for a paramiterized func
Func<int
/*Or some other types followed by others optional comma seperated*/,
string/*Or some other type to return last*/> YourParamitarizedFuncProperty =
(x/*Each Param will be to the comma seperated types*/)=>
{/*do some with the inputs*/return $"you entered a {x} or return what you want";};
// you can invloke them by calling their invokes.
string YouReturn = YourFuncProperty.Invoke();
string YouReturn = YourParamitarizedFuncProperty.Invoke(5);
//The last is the basic sycronous way. For a aysnc call uses
YourFuncProperty.BeginInvoke();
YourParamitarizedFuncProperty.BeginInvoke(5);
//however, you will need to begin a await with EndInvoke to get your result after.
string YouReturn = YourFuncProperty.EndInvoke();
string YouReturn = YourParamitarizedFuncProperty.EndInvoke(5);
//You can also fill them with defined methods in a class if you wish,
//but the signatures must match.
Func<string> YourActionDefinedProperty = YourDefinedMethod;
string YourDefinedMethod()
{
//do something
return "or return what you want";
}
//Example of use
public sealed class DataContainer
{
//A bit contrived but we will give the ablity to overide the printout
//of the class while still keeping it sealed. See the invoke at ToString.
//could be useful in a library or something?
static func<string> SealedFuncStringOverride;
DataContainer(datetime Date)
{
this.Date = Date;
}
public datetime Date {get; private set;}
public int Amount {get; private set;}
public string Info {get; private set;}
public string FirstName {get; private set;}
//The invoke is used in here.
public override string ToString()
{
if(SealedFuncStringOverride!=null)
return SealedFuncStringOverride.BeginInvoke();
return base.ToString;
}
}
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