[Qt-interest] [very OT] How to create single instance app?

[Konrad Rosenbaum]

[Warning: techno babble ahead]
On Mon, May 10, 2010 10:34, Oliver.Knoll at comit.ch wrote:
> Konrad Rosenbaum wrote on Sunday, May 09, 2010 6:35 PM:
>> With an appropriately tuned transceiver you can easily reach
>> acceptable ping times in the range of minus a few hundred
>> milliseconds.
>
> Minus? Did I read you correctly? A ping time of MINUS few hundred
> milliseconds? Wow, that is amazing! That means I could implement a "lock
> file server" which knows in advance that I want to start that application,
> even before I know!

In theory: yes.

> That's so cool! Or one could implement a "typeahead"
> chat server (a chat server which already writes what I will - or might -
> mean in a few seconds). The effects on sites such as facebook could be
> revolutionary!

Unfortunately multi-dimensional FTL-caused time distortions do not work
this way. In practice the return signal is "out of tune" with your own
(perceived) reality by several hundred milliseconds, which you will have
to compensate with a phase discriminator tuned to the same +/- 0.1ms as
the signal.

The good news is that you get near instantaneous communication across the
visible part of the galaxy.

Modern starship communication antenna arrays do all this automatically.
Some of the smaller ones for shuttles are available as open source
replicator patterns.

>> Very competent maintenance technicians are available for a fair price
>> and they might even help you do the orbit calculations if you ask
>> logically.
>
> "Ask logically"? Does that mean I must be able to great like a Vulcanian,
> spreading my fingers in this ...err... complicated way, without showing
> any emotions, not even pulling up an eyebrow?

Well, you should try to stay calm and you might need to explain why it is
logical to help you - "advancement of science" wins them over pretty much
every time.


....I think we digressed a little bit from the topic of this list. Didn't we?


greetings,

---
Konrad Rosenbaum (third year engineering cadet)
Star Fleet Academy
Central European branch office
Subspace Network Research Division