Save a type in a variable
pragma
ericanderton at yahoo.com
Thu Jan 25 19:12:32 PST 2007
Kirk McDonald wrote:
> Pragma wrote:
>> Heinz wrote:
>>
>>> Hi, i have a class and i need to retrieve a type as a parameter in
>>> its constructor, example: (can be made easily in c#)
>>>
>>> class myclass
>>> {
>>> type mytype;
>>> this(type t)
>>> {
>>> mytype = t;
>>> }
>>> }
>>>
>>> I don't have a single approach to do this. i need a clue pliss? an
>>> example woyld be great hehe, thx
>>
>>
>> You want to use 'TypeInfo' at runtime (instead of 'type'), and use
>> typeof(T) at compile time:
>>
>> for example:
>>
>> TypeInfo mytype = typeof(int);
>>
>>
>
> That should be:
>
> TypeInfo mytype = typeid(int);
>
> typeid() returns a type's TypeInfo at runtime. typeof() infers the type
> of an expression at compile-time.
>
> Note that TypeInfo is just information about a type. (You can compare
> the TypeInfos of two items to see if they are the same type.) You cannot
> create variables of a type with just its TypeInfo. (That kind of
> trickery is what templates are for.)
>
ack... um, what he said. :)
sorry for the misinformation.
More information about the Digitalmars-d-learn
mailing list