Re: C# new features (v.7)

[Robert A Duff <bobduff@TheWorld.com>]

"Nasser M. Abbasi" <nma@12000.org> writes:

> On 12/17/2016 4:09 AM, Paul Rubin wrote:
>
>> Younger programmers (those who didn't grow up dealing with old slow
>> machines with little memory) generally use lower performance but more
>> convenient languages rather than C, Ada, etc.  They're protected from
>> integer overflow by bignums, memory errors by bounds checking,
>                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> alloc/free errors by garbage collection, etc.
>
> Which one of these so called "modern" and "fun" languages
> that Younger programmers use has bounds checking built in?

"bounds checking" means "array bounds checking".
Almost all languages have that (C being a notable exception).

I think you're thinking of "range checking", as in Ada where
you declare something to be "range 1..Integer'Last", and
it checks that you didn't assign 0 or -123 to it.
Fewer languages have that.

> Can one even declare a variable in these languages with restricted
> bounds?  May be I am misunderstanding the context you are thinking
> of here.
>
> I thought Ada was unique in this area, one of the few language
> if not only one.

Not unique.  Ada got the idea from Pascal.  And Modula-N and
other Wirthian languages have it.

> ...Ada also has got too complex from its
> original1983 version.

It was already too complex in 1983.

> --Nasser

- Bob