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Why prefer two's complement over sign-and-magnitude for signed numbers?
...o add them.
Two's complement addition is very simple. You add numbers normally and any carry bit at the end is discarded. So they're added as follows:
0010
+ 1111
=10001
= 0001 (discard the carry)
0001 is 1, which is the expected result of "2+(-1)".
But in your "intuitive" method, adding is m...
What's the best way to make a d3.js visualisation layout responsive?
...sive
http://soqr.fr/testsvg/embed-svg-liquid-layout-responsive-web-design.php
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Select last N rows from MySQL
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But then you just do a php array_reverse() or whatever the equivalent is in your scripting language of choice. The database doesn't need to do that work.
– Joe
Aug 7 '16 at 22:58
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MySQL: how to get the difference between two timestamps in seconds
...ifference between two timestamps in seconds, or would I need to do that in PHP? And if so, how would I go about doing that?
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Are braces necessary in one-line statements in JavaScript?
... expands the statement it will be required.
This same practice follows in all C syntax style languages with bracing. C, C++, Java, even PHP all support one line statement without braces. You have to realize that you are only saving two characters and with some people's bracing styles you aren't eve...
What is Java Servlet?
...a particular type of network request - most commonly an HTTP request. Basically servlets are usually used to implement web applications - but there are also various frameworks which operate on top of servlets (e.g. Struts) to give a higher-level abstraction than the "here's an HTTP request, write to...
How do I list all files of a directory?
How can I list all files of a directory in Python and add them to a list ?
21 Answers
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How do I comment on the Windows command line?
...nt one for batch file (and other) chicanery: robvanderwoude.com/batchfiles.php
– paxdiablo
Jun 8 '10 at 23:55
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Elasticsearch query to return all records
I have a small database in Elasticsearch and for testing purposes would like to pull all records back. I am attempting to use a URL of the form...
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What do I use for a max-heap implementation in Python?
... amazed that there IS such a built-in solution in heapq. But then it is totally unreasonable that it is NOT even slightly mentioned at all in the official document! WTF!
– RayLuo
Apr 21 '15 at 6:48
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