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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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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 ...
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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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: 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...
Making the iPhone vibrate
How can the iPhone be set to vibrate once?
12 Answers
12
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Pretty-print C++ STL containers
...esn't print a delimiter after the last item. Formatting the containers is done by the print_container_helper, which can be used directly to print containers without an is_container trait, or to specify a different delimiters type.
I've also defined is_container and delimiters so it will work for co...
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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How can I reverse a list in Python?
... is not the same as reverse([1,2,3]), n.b. the 'd' at the end ... which is one of the other answers below, which does this in-place, whereas this returns an iterator.
– Luciano
Oct 8 '16 at 9:36
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