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<div class="moz-cite-prefix">On 04/26/2018 03:44 AM, Thiago Macieira
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.1254.1524732282.3940.interest@qt-project.org">
<pre wrap=""><div class="moz-txt-sig">On Wednesday, 25 April 2018 06:53:26 PDT Roland Hughes wrote:
</div></pre>
<blockquote type="cite" style="color: #000000;">
<pre wrap="">What I'm trying to tell you is there was and still is a legitimate
reason to have a QDataStream which can write big-endian. Don't just rip
it out. Make it some kind of settable boolean flag in the class. There
is no way to know just how many of these things are still out there and
are still being developed. Most were in the world of defense
contractor/military
</pre>
</blockquote>
<pre wrap="">I never claimed it isn't. In fact, there is a flag to set the endianness.
When I said "most machines are little-endian", I was referring to machines Qt
runs on and, therefore, would use QDataStream. The fact that the default is
big endian is short-sighted. It should default to little-endian.</pre>
</blockquote>
No. Taking a disposable chip's view of the world is short sighted
and completely invalidates the historical reason for the class. It
was created to feed real computers which operate in Big-Endian.<br>
<br>
Read up on seismic testing or stuff happening with the Super
Colliding Super Conductor. In the case of SCSC many thousands of
disposable chip "sensors" running an application to pick up one or a
few certain readings are streaming that stuff back to the only box
which can handle them, big iron. IBM was never the fastest
computationally, but when it comes to data throughput to/from disk
they are a 14" city water main and their nearest competitor is happy
the one day per week they achieve being a fire hose.<br>
<br>
Here's a delightful little book about oil well drilling. I've read
mine many times.<br>
<a class="moz-txt-link-freetext" href="http://iliosresources.com/downloads/come-drill-a-well-in-my-backyard/">http://iliosresources.com/downloads/come-drill-a-well-in-my-backyard/</a><br>
<br>
In today's world "Big Oil" uses satellites to identify "potential"
places with oil reserves. For anything above water they then go
through the long, arduous journey of getting permits to do seismic
testing. Such testing involves drilling thousands of shot-holes
(depending on the size of the potential reserve). Some have actual
shots put in them with a blast sensor built using a disposable chip
behind them to control/ensure/measure the blast. (Dry fires happen
and the test analysis software has to be made aware of it.) A large
percentage of these sensors will simply be lost, hence the need for
disposable chips. They used to use Z-80, then for years INTEL x86
was the ultimate throw away chip. Now it is moving to ARM since you
can get a Raspberry Pi for $15 or less when bought in 100
quantities.<br>
<br>
Don't assume the class was created for use within the world of the
disposable chip.<br>
<br>
That particular class was designed so Qt on disposable chips could
provide real computers an actual service.<br>
<br>
Oh, here's a wee bit to add.<br>
<br>
No company or person is allowed to _own_ seismic data. There is an
industry standard format where binary data is big-endian. Upon
request, for a nominal media and shipping fee, if you have it you
have to provide it to whoever asks. Geologically and
environmentally, we don't want 100+ companies drilling 1000+
shot-holes in the exact same county. What you are allowed to own is
the analysis software you develop. <br>
<br>
Do NOT change the default behavior of that class. It wasn't written
for use on an iDiot Phone. It's design was and still is far
reaching. Had it not existed, Qt would have had a dramatically
shorter growth arc, possibly not surviving long enough to make it
onto iDiot Phones. Changing the default behavior of the class would
be viciously short sighted.<br>
<br>
Sorry, I don't mean to sound insulting, but, in this particular case
you are a grain of sand on the beach trying to remove the ocean
because it gets you wet.<br>
<pre class="moz-signature" cols="72">--
Roland Hughes, President
Logikal Solutions
(630)-205-1593
<a class="moz-txt-link-freetext" href="http://www.theminimumyouneedtoknow.com">http://www.theminimumyouneedtoknow.com</a>
<a class="moz-txt-link-freetext" href="http://www.infiniteexposure.net">http://www.infiniteexposure.net</a>
<a class="moz-txt-link-freetext" href="http://www.johnsmith-book.com">http://www.johnsmith-book.com</a>
<a class="moz-txt-link-freetext" href="http://www.logikalblog.com">http://www.logikalblog.com</a>
<a class="moz-txt-link-freetext" href="http://www.interestingauthors.com/blog">http://www.interestingauthors.com/blog</a>
<a class="moz-txt-link-freetext" href="http://lesedi.us/">http://lesedi.us/</a>
<a class="moz-txt-link-freetext" href="http://onedollarcontentstore.com">http://onedollarcontentstore.com</a></pre>
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