[fpc-pascal] Untyped var params
pascaldragon at googlemail.com
Sun Jan 8 12:36:33 CET 2017
On 08.01.2017 11:36, Ryan Joseph wrote:
>> On Jan 8, 2017, at 5:22 PM, Sven Barth <pascaldragon at googlemail.com> wrote:
>> 1. Why are you trying to assign something to io when you already did
>> that with "obj := …"?
> I used absolute here so I could know the type of io and not type cast within the function. No good? The idea is I want “io” to be assigned with the value from newObject or set to nil if the input is nil. I know io is a member of TObject but I don’t want type checking when I return the value from the function otherwise all my calls look like RetainObject(TObject(foo), newFoo). It’s a small annoyance but I thought I would take the time to learn Free Pascal more since it always pays off in the end.
The use of absolute is absolutely (ha!) fine. However the second
assignment using "io" is superfluous as you already did the assignment
through the absolute alias.
More information about the fpc-pascal