Lambda, anonymous functions, assign function to variable, etc.
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#1
(In Topic #819)
Trainee
Or is creating a separate class for each function the only way to do it like old Java?
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Guru

kwhitefoot said
Is it possible to assign a function to a variable or pass a function to another function?
Or is creating a separate class for each function the only way to do it like old Java?
Possibly find what you are looking for with Object.Call()
/comp/gb/object/call - Gambas Documentation
Then you can pass/assign the function (method) as a string and call it that way.
Object.Call(MyClass, "MyFunctionName", [My, Arguments])
Posted
Regular

kwhitefoot said
Is it possible to assign a function to a variable or pass a function to another function?
Or is creating a separate class for each function the only way to do it like old Java?
Yes. If you want more SOLID in a Gambas application, you should create a separate class for each function. The situation is worse: there is no generics in Gambas, so we should duplicate hierarchies of classes for each type of input and output.
Assigning a function to a variable or passing a function to another function is an illusion in Java. Really, we assign and pass an object of anonymous class that implements a functional interface. When I code on Java, I often prefer anonymous class because I immediately see the name of the interface and signature of overridden method, so readability is better.
Posted
Guru

kwhitefoot said
Is it possible to assign a function to a variable or pass a function to another function?
Or is creating a separate class for each function the only way to do it like old Java?
You could also use a Property in any class then reading the property is actually a function.
Code (gambas)
then if you did this..
Print Me.MyPropertyName
The MyPropertyName_Read() Function is run and the results returned
Or this…
Me.MyPropertyName = "SomeThing"
Then the MyPropertyName_Write() Sub is run with "SomeThing" as the Value
Posted
Guru

kwhitefoot said
Is it possible to assign a function to a variable or pass a function to another function?
Or is creating a separate class for each function the only way to do it like old Java?
Also there is using the 3 dots and Param.class if it's a variadic expression you want.
See /lang/methoddecl - Gambas Documentation
I don't know truly what you mean by a Lambda function but there are ways to accomplish many things in gambas.
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