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What are the differences between a HashMap and a Hashtable in Java?
...ions, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashMap allows one null key and any number of null values.
One of HashMap's subclasses is LinkedHashMap, so in the event that you'd want predictable iteration order (which ...
std::cin input with spaces?
...d mean you can change the size of the input buffer and only need to change one line instead of two lines. Change 2 would be to test the return from cin.getline() by using, for example, if (!cin.getline(input, sizeof(input))) { ...handle EOF or error... } or something similar, to remind the OP that i...
How to benchmark efficiency of PHP script
...to run it there (as long as you read the instructions). The results of any one single page load aren't going to be as relevant as seeing how your code performs while the server is getting hammered to do a million other things as well and resources become scarce. This raises another question: are you...
Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...our Canvas, the old drawings are still on the surface and that is probably one way to "update just a part" of the screen.
So, if you want to "update a part of the screen", just avoid calling Canvas.drawColor() method.
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Android: How to stretch an image to the screen width while maintaining aspect ratio?
...s post: stackoverflow.com/questions/4677269/… There I use a ImageView so one can set the drawable in the XML or use it like normal ImageView in code to set the image. Works great!
– Patrick Boos
Jan 14 '11 at 5:51
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Are there conventions on how to name resources?
...nge
So generic (ids, ...) gets reused in the R.java file while the unique ones (sometimes gets reused) get prefixed with generic ones separated by an underscore.
The underscore is one thing, I observed, for example:
Layout width is layout_width in xml and layoutWidth in code, so I try to stick...
Twig for loop for arrays with keys
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This example doesn't iterate over the array keys, see the ones above
– user2019515
May 12 '14 at 1:48
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How to reload or re-render the entire page using AngularJS
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It is worth noting that one shouldn't be storing state in the services anyway to require services to be "restarted".
– andersonvom
Oct 22 '14 at 13:44
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Get the correct week number of a given date
I have Googled a lot and found a lot of solutions, but none of them give me the correct week number for the 2012-12-31. Even the example on MSDN ( link ) fails.
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Making the iPhone vibrate
How can the iPhone be set to vibrate once?
12 Answers
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