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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Null-object/FreeBASIC/null-object.basic Normal file
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'FB 1.05.0 Win64
' FreeBASIC does not have a NULL keyword but it's possible to create one using a macro
#Define NULL CPtr(Any Ptr, 0) '' Any Ptr is implicitly convertible to pointers of other types
Type Dog
name As String
age As Integer
End Type
Dim d As Dog Ptr = New Dog
d->Name = "Rover"
d->Age = 5
Print d->Name, d->Age
Delete d
d = NULL '' guard against 'd' being used accidentally in future
' in practice many FB developers would simply have written: d = 0 above
Sleep