ooc-compiler

[ooc-compiler] Usage of ADT:Dictionary

[vedmed <ve...@in...>]

The library oo2c contains very useful object ADT:Dictionary.Dictionary. 
This object has procedure of check of existence of a key and procedure 
of reception of value on a key, but does not contain procedure returning 
simultaneously value on a key, and an attribute of existence instead of 
exception. It compels in cases similar to
...
  d: SomeDictionary;
...
IF d.HasKey(key) THEN
  val := d.Get(key);
  val.DoSomething();
ELSE
...
perform search under the dictionary twice, instead of once, like
...
IF d.Find(key, val) THEN
  val.DoSomething();
ELSE
...
 I can easily add manually such procedure in module Dictionary, but 
would like to see it in structure of standard library. However if there 
are basic objections against existence of such procedure I would like 
them to hear.

Re: [ooc-compiler] Usage of ADT:Dictionary

[Michael v. A. <mic...@gm...>]

On 6/26/05, vedmed <ve...@in...> wrote:
> The library oo2c contains very useful object ADT:Dictionary.Dictionary.
> This object has procedure of check of existence of a key and procedure
> of reception of value on a key, but does not contain procedure returning
> simultaneously value on a key, and an attribute of existence instead of
> exception. It compels in cases similar to
> ...
[...]
> ...
>  I can easily add manually such procedure in module Dictionary, but
> would like to see it in structure of standard library. However if there
> are basic objections against existence of such procedure I would like
> them to hear.

No objections from my side.  I would prefer the name "Lookup" instead=20
of "Find", though.  This conflicts with the current private Lookup() method=
,
but its name can be easily changed.

If you provide me with a patch for ADT:Dictionary and the other three
dictionary modules (ADT:Dictionary:AddressKey and so on), then I will
add it to the std library.

-- mva