OpenEuphoria

Re: New Euphoria features

• Posted by Pete Lomax <petelomax at blueyonder.co.uk> Feb 24, 2005
• 466 views

ZNorQ wrote:
>> > 
>> > IF I'm so lucky, I would wish for the following features;
>> > 
>> > #1;
>> > Select Case
>> >   Case .. or ..
>> >   Case Else
>> > end Select
>> > 
>> > I hate having to use IF / ELSIF in this case.
Sorry, but that is a truly AWFUL way to ask for change. You give
absolutely no reason /why/ it would be better. Note that this must not
be about personal preference, it must be a genuine gain, for all.
See below:

>> > #2;
>> > 100% object oriented? :D
If you want OO, use Java/C++ )

CChris wrote:

>Pointers are supposed to be unsafe, hard to debug etc. I don't fully agree 
>with that view.
>However, some solution to the problem you state is needed. Creating aliases 
>for things, like in:
>
>ref current_task running_tasks[priority][task_id][TASK_NAME]
>--do some stuff, using "current_task" as a macro
I agree wholeheartedly, thought I would prefer alias, and further that
it is only available inside routines, since I think it adds complexity
if not defined locally.

alias rt to running_tasks[priority][task_id][TASK_NAME]
	alias st to sleeping_tasks[priority][task_id][TASK_NAME]

	if equal( rt, task_to_kill ) then
		rt = kill_task( rt ) 
	elsif equal( st, task_to_kill ) then
		st = kill_task( st )
...

which I think is a darn sight better than:

if equal( running_tasks[priority][task_id][TASK_NAME],
task_to_kill ) then
		running_tasks[priority][task_id][TASK_NAME] = kill_task(
running_tasks[priority][task_id][TASK_NAME] ) 
	elsif equal( sleeping_tasks[priority][task_id][TASK_NAME],
task_to_kill ) then
		sleeping_tasks[priority][task_id][TASK_NAME] = kill_task(
sleeping_tasks[priority][task_id][TASK_NAME] )

Note that an alias is not "efficient", for that you probably need
local var(s), (I couldn't see a way with the above to improve matters
anyway, given refcount issues). It performs all the work that the
longhand version does, unless someone has a bright idea.

Though as I've said before, the only way you'll get anywhere with this
is to implement it in the open source eu.ex, sorry.

Regards,
Pete