Comments on: Gem #3: Limited Types in Ada 2005 — Constructor Functions

By: Bryan

Bryan — Wed, 24 Feb 2010 18:13:24 +0000

Thank you for posting these three gems in the series. I’m coming from C++ and trying to wrap my head around Ada2005. Your explanation of “constructors” and how limited types are initialized by aggregates is very helpful.

By: Franco Gasperoni

Franco Gasperoni — Fri, 01 Jun 2007 14:07:14 +0000

By () above I mean (< >)

By: Franco Gasperoni

Franco Gasperoni — Fri, 01 Jun 2007 14:06:23 +0000

Yes Paul, Limited types are extremely useful now.

Using Limited types and the () idiom you can now
force the use of constructors as Bob explained in this gem.

Furthermore you you make the type limited and abstract you can force dispatching if the constructors return a ‘Class.

By: Paul F. Pearson

Paul F. Pearson — Wed, 30 May 2007 14:03:10 +0000

Wow. It appears that a *lot* of the new Ada 2005 changes are regarding Limited Types, making them more usable. I’m impressed.

I never did much with limited types in Ada 95 primarily because of the momentum of the culture at work presumably for the shortcomings that Ada 2005 now corrects.

Thanks, again.