[Gambas-user] What does the "?" for a datatype?

Rolf-Werner Eilert eilert-sprachen at ...221...
Tue May 5 10:36:29 CEST 2009


Hi folks,

just stumbled over this: When typing AS Integer or AS Boolean, the IDE 
gives me several completions to choose from:

Integer
Integer?
Integer[]

or

Boolean
Boolean?
Boolean[]

What is the questionmark variation good for?

Rolf




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