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

[Rolf-Werner Eilert]

Stefano Palmeri schrieb:
> Il martedì 5 maggio 2009 10:36:29 Rolf-Werner Eilert ha scritto:
>> 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
>>
> 
> Integer? is the same as  IsInteger
> Boolean? is the same as IsBoolean
> 
> See datatype functions in Gambas online help (or local).
> 
> http://www.gambasdoc.org/help/cat/type?v3
> 
> Stefano
> 
> 

Aaah - it's a function! Very interesting :-) Thanks for that!



Rolf