Polymorphic copy: Difference between revisions
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end program test
</syntaxhighlight>
=={{header|FreeBASIC}}==
FreeBASIC does not support object-oriented programming and polymorphy. However, you can simulate it using user-defined types and procedure pointers.
<syntaxhighlight lang="vbnet">Type T
method As Sub(pthis As T Ptr)
End Type
Type S Extends T
dato As Integer
End Type
Sub TMethod(pthis As T Ptr)
Print "T method"
End Sub
Sub SMethod(pthis As S Ptr)
Print "S method, dato = "; pthis->dato
End Sub
Sub CallMethod(pthis As T Ptr)
pthis->method(pthis)
End Sub
Dim As T tt
tt.method = @TMethod
Dim As S ss
ss.method = @SMethod
ss.dato = 123
Sleep</syntaxhighlight>
{{out}}
<pre>T method
S method, dato = 123</pre>
=={{header|Go}}==
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There is no built in 'copy' method - you need to write your own for any class that needs it.
<syntaxhighlight lang="
construct new(name, age) {
_name = name
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