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Why prefer two's complement over sign-and-magnitude for signed numbers?
... to 4 bits for size). In the two's complement way, they are 0010 and 1111. Now, let's say I want to 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)
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How to extract text from a PDF? [closed]
...es from a PDF?
We need to be able to get at text that is contained in pre-known regions of the document, so the API will need to give us positional information of each element on the page.
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What is the Python equivalent of Matlab's tic and toc functions?
...TicToc, marks the beginning of a time interval
toc(False)
That's it! Now we are ready to fully use tic() and toc() just as in Matlab. For example
tic()
time.sleep(5)
toc() # returns "Elapsed time: 5.00 seconds."
Actually, this is more versatile than the built-in Matlab functions. Here, ...
How to prevent browser page caching in Rails
...
use:
expires_now()
http://api.rubyonrails.org/classes/ActionController/ConditionalGet.html#method-i-expires_now
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Add custom icons to font awesome
...ab, fas, far, fal) you'll be at greater risk of a naming conflict—if not now, then possibly in the future as we continue adding icons with those standard prefixes. Using a custom prefix won't make an svg any less likely to "fit into the website"—but I'm not sure what you mean by that phrase, so ...
Why exactly is eval evil?
I know that Lisp and Scheme programmers usually say that eval should be avoided unless strictly necessary. I’ve seen the same recommendation for several programming languages, but I’ve not yet seen a list of clear arguments against the use of eval . Where can I find an account of the potentia...
What exactly are DLL files, and how do they work?
...ly do DLL files work? There seems to be an awful lot of them, but I don't know what they are or how they work.
9 Answers
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What is a serialVersionUID and why should I use it?
...ersioning support of Serialization, (a) to ensure that the class really is now serialization-incompatible way, which per the specification is quite difficult to achieve; (b) to try a scheme such as custom read/writeObject() methods, readResolve/writeReplace() methods, serializableFields declarations...
How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L
...ached a limit of 11 sites, after which it started running even slower! For now, I've split things up into two hosts entries (with the same IP address) and it seems to be going fine.
– Alex Ghiculescu
Apr 15 '13 at 6:46
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Loading existing .html file with android WebView
...id_res/raw/myfile.html"); works only on API level 8. But it doesn't matter now.
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