generic container library

generic container library

[Szymon Guz]

Hi,
I've found some generic libraries with containers that I want to use but 
I don't want to test all of them so my question is: which library shoul 
I choose  ?

regards
Szymon Guz

Re: generic container library

[stephane richard]

Hi Szymon,

Take a look at my website (http://www.adaworld.com) In the Ada projects then 
Library Projects..you'll find there the better libraries.

Hope this helps,

Stephane Richard
"Ada World" webmaster
http://www.adaworld.com

"Szymon Guz" <guzo@stud.ics.p.lodz.pl> wrote in message 
news:clt7fb$1caa$1@news2.ipartners.pl...
> Hi,
> I've found some generic libraries with containers that I want to use but I 
> don't want to test all of them so my question is: which library shoul I 
> choose  ?
>
> regards
> Szymon Guz 

Re: generic container library

[Alex R. Mosteo]

Szymon Guz wrote:
> Hi,
> I've found some generic libraries with containers that I want to use but 
> I don't want to test all of them so my question is: which library shoul 
> I choose  ?

I'd recommend the excellent Charles or, looking towards Ada0Y, the Ada95 
  implementation of Ada.Containers.* by the same author.

Re: generic container library

[Martin Krischik]

Szymon Guz wrote:

> Hi,
> I've found some generic libraries with containers that I want to use but
> I don't want to test all of them so my question is: which library shoul
> I choose  ?

Depends what you need. We can't really help you here.

I use the Booch components for Ada 95. I find them more Ada friendly then
the C++ STL inspired component libraries.

One more advice: See that you choice supports indefinite elements. Why? Well
String and X'Class are an indefinite Types for once.

The booch components have an extension pack for indefinite elements {Simon,
if you read this - could we just merge them?} and the new Ada.Components
will have support indefinite elements - but they are for Ada0Y.

With Regards

Maritn
-- 
mailto://krischik@users.sourceforge.net
http://www.ada.krischik.com

Re: generic container library

[Marin David Condic]

There were three excellent articles in the most recent issue of "Ada 
Letters" that covered libraries. I don't recall that any of the articles 
mentioned if the container libraries of interest provided for 
persistence (some ability to write & read the containers to/from a file 
or stream). I consider that a pretty critical feature, so you might want 
to consider that in selecting one for your future projects. Even a 
library that is a little weaker in some other regard would score big 
points with me so long as I don't have to figure out how to load and 
store the data between program runs. Especially if I can make containers 
of containers of containers and get the whole ball of wax stored in a 
file. (See the 'Read and 'Write and related attributes of streams - its 
really pretty cool.)

MDC

Szymon Guz wrote:
> Hi,
> I've found some generic libraries with containers that I want to use but 
> I don't want to test all of them so my question is: which library shoul 
> I choose  ?
> 
> regards
> Szymon Guz

-- 
======================================================================
Marin David Condic
I work for: http://www.belcan.com/
My project is: http://www.jsf.mil/NSFrames.htm

Send Replies To: m   o   d   c @ a   m   o   g
                    c   n   i       c   .   r

     "Power corrupts.  Absolute power is kind of neat"
         -- John Lehman, Secretary of the Navy 1981-1987
======================================================================

Re: generic container library

[Matthew Heaney]

"Marin David Condic" <nobody@noplace.com> wrote in message 
news:Yjqgd.11340$5i5.8014@newsread2.news.atl.earthlink.net...
> There were three excellent articles in the most recent issue of "Ada 
> Letters" that covered libraries. I don't recall that any of the articles 
> mentioned if the container libraries of interest provided for persistence 
> (some ability to write & read the containers to/from a file or stream). I 
> consider that a pretty critical feature, so you might want to consider 
> that in selecting one for your future projects. Even a library that is a 
> little weaker in some other regard would score big points with me so long 
> as I don't have to figure out how to load and store the data between 
> program runs. Especially if I can make containers of containers of 
> containers and get the whole ball of wax stored in a file. (See the 'Read 
> and 'Write and related attributes of streams - its really pretty cool.)

I don't think I implemented the stream attributes for Charles, but it 
wouldn't be hard to do that.  Let me know which containers you need, and 
I'll give those priority.  See the charles-*.ad[sb] files in:

http://charles.tigris.org/source/browse/charles/src/

Note that the AI-302 containers are required to support streaming, and so 
the reference implementation has already implemented the streaming 
attributes.  See the a-c*.ad[sb] files in:

http://charles.tigris.org/source/browse/charles/src/ai302/

In either case, that means you can have a container of containers, and 
streaming it out will do the right thing,

Re: generic container library

[Martin Dowie]

"Matthew Heaney" <mheaney@on2.com> wrote in message news:41825a24$0$91006> I 
don't think I implemented the stream attributes for Charles, but it
> wouldn't be hard to do that.  Let me know which containers you need, and 
> I'll give those priority.  See the charles-*.ad[sb] files in:
>
> http://charles.tigris.org/source/browse/charles/src/
>
> Note that the AI-302 containers are required to support streaming, and so 
> the reference implementation has already implemented the streaming 
> attributes.  See the a-c*.ad[sb] files in:
>
> http://charles.tigris.org/source/browse/charles/src/ai302/
>
> In either case, that means you can have a container of containers, and 
> streaming it out will do the right thing,

Matt - for your reference implementation have you got hold of a prototype 
Ada0Y compiler? Or are you 'imagining' how all the code will work?.. 

Re: generic container library

[Martin Dowie]

"Martin Krischik" <martin@krischik.com> wrote in message 
news:4365524.LcDjESxM3m@linux1.krischik.com...
> The booch components have an extension pack for indefinite elements 
> {Simon,
> if you read this - could we just merge them?} and the new Ada.Components
> will have support indefinite elements - but they are for Ada0Y.

Not quite true - there is a version @ 
http://www.martin.dowie.btinternet.co.uk/

A new version will be available soon (end of next week hopefully)...

Re: generic container library

[Jeffrey Carter]

Szymon Guz wrote:

> I've found some generic libraries with containers that I want to use
> but I don't want to test all of them so my question is: which library
> shoul I choose  ?

There will be a minimal standard container library in Ada 0X, and if it 
fits your needs, there should be Ada-95 friendly versions of that 
library available. Using such a library will help you adhere to the 
future standard.

If the minimal library doesn't meet your needs, there are plenty of 
libraries that are richer. You can find many listed on adapower.com and 
adaworld.com. I prefer the PragmAda Reusable Components:

http://home.earthlink.net/~jrcarter010/pragmarc.htm

But I may be biased.

-- 
Jeff Carter
"Every sperm is sacred."
Monty Python's the Meaning of Life
55

Re: generic container library

[Matthew Heaney]

"Martin Dowie" <martin.dowie@btopenworld.com> wrote in message 
news:cltvqv$35a$1@sparta.btinternet.com...
>
> Matt - for your reference implementation have you got hold of a prototype 
> Ada0Y compiler? Or are you 'imagining' how all the code will work?..

Yes, I have an Ada 2005 compiler, courtesy of ACT.  (I joined their GAP 
program.)

Re: generic container library

[Marin David Condic]

For current projects, I'm using a home-grown container library that is 
based on a class heierarchy. It implements the needed stream attributes 
and it really works rather spiffy as you build things up from the class 
heierarchy. If I build up all the data for a given app from the base 
class one single "Load" or "Store" operation and BAM! Ada takes care of 
it automagically.

I liked the article on Charles. Its good to know that you plan on adding 
the necessary stream attributes since this library seems to be gaining 
some acceptance as a de facto standard. Its also good to know that when 
it gets into the ARM that the plan there is to provide for persistance. 
Dunno why that didn't seem intuitively obvious when people started 
thinking about ADTs and container libraries, but most of them don't 
provide a means of dealing with persistance.

MDC


Matthew Heaney wrote:
> 
> I don't think I implemented the stream attributes for Charles, but it 
> wouldn't be hard to do that.  Let me know which containers you need, and 
> I'll give those priority.  See the charles-*.ad[sb] files in:
> 
> http://charles.tigris.org/source/browse/charles/src/
> 
> Note that the AI-302 containers are required to support streaming, and so 
> the reference implementation has already implemented the streaming 
> attributes.  See the a-c*.ad[sb] files in:
> 
> http://charles.tigris.org/source/browse/charles/src/ai302/
> 
> In either case, that means you can have a container of containers, and 
> streaming it out will do the right thing,
> 
> 

-- 
======================================================================
Marin David Condic
I work for: http://www.belcan.com/
My project is: http://www.jsf.mil/NSFrames.htm

Send Replies To: m   o   d   c @ a   m   o   g
                    c   n   i       c   .   r

     "Power corrupts.  Absolute power is kind of neat"
         -- John Lehman, Secretary of the Navy 1981-1987
======================================================================

Re: generic container library

[Simon Wright]

Marin David Condic <nobody@noplace.com> writes:

> There were three excellent articles in the most recent issue of "Ada
> Letters" that covered libraries. I don't recall that any of the
> articles mentioned if the container libraries of interest provided for
> persistence (some ability to write & read the containers to/from a
> file or stream).

The Ada 95 BC containers support streaming, with (I see) the exception
of Graphs, Lists and Trees. But that still leaves you a lot of choice
(remembering that the BC List is a very fancy thing, and most people
should use Collection instead).

-- 
Simon Wright                               100% Ada, no bugs.