method and function

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Shambler

I think I am right in saying that as far as types are concerned,

a method has implicit access to the data in the type but a function does not.

This means that if you call a function related to a type you must still pass an explicit reference to the the type instance concerned.

an example of a method and a non working function...

Type mytype

Field x,y,z

Method do_method()
x=1
y=2
z=3
End Method

 
Function do_function()
x=4
y=5
z=6
End Function

End Type


a:mytype =New mytype

a.do_method()
Print a.x+" "+a.y+" "+a.z

a.do_function()
Print a.x+" "+a.y+" "+a.z

WaitKey()
End

You see how the call to do_function() failed to change the data in the type.

An example of how to get the function working...

Type mytype

Field x,y,z

Method do_method()
x=1
y=2
z=3
End Method

 
Function do_function(thistype:mytype)
thistype.x=4
thistype.y=5
thistype.z=6
End Function

End Type


a:mytype =New mytype

a.do_method()
Print a.x+" "+a.y+" "+a.z

a.do_function(a)
Print a.x+" "+a.y+" "+a.z

WaitKey()
End

That, to the best of my knowledge is the difference.