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How does one write code that best utilizes the CPU cache to improve performance?
...ted in how memory and software interact. It's also available as a 104-page PDF.
Sections especially relevant to this question might be Part 2 (CPU caches) and Part 5 (What programmers can do - cache optimization).
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Flatten nested dictionaries, compressing keys
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ninjageckoninjagecko
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How to generate a random alpha-numeric string?
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According to RFC4122 using UUID's as tokens is a bad idea: Do not assume that UUIDs are hard to guess; they should not be used as securi...
Can I store the .git folder outside the files I want tracked?
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Tritium21
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answered Feb 2 '09 at 23:58
BombeBombe
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What is the difference between a URI, a URL and a URN?
...u could also identify the text as file://hostname/sharename/RomeoAndJuliet.pdf.
That would also be a URI, but more specifically a URL because it locates the text.
*Uniform Resource Name
(Note that my example is adapted from Wikipedia)
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Accessing Object Memory Address
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You could reimplement the default repr this way:
def __repr__(self):
return '<%s.%s obj...
How to access pandas groupby dataframe by key
...p('foo')
Out[21]:
A B C
0 foo 1.624345 5
2 foo -0.528172 11
4 foo 0.865408 14
Note: This doesn't require creating an intermediary dictionary / copy of every subdataframe for every group, so will be much more memory-efficient that creating the naive dictionary with dict(ite...
How can I use speech recognition without the annoying dialog in android phones
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Use the SpeechRecognizer interface. Your app needs to have the RECORD_AUDIO permission, and you...
Should try…catch go inside or outside a loop?
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Performance: as Jeffrey said in his reply, in Java it doesn't make much difference.
Generally,...
Android OpenGL ES and 2D
...uett Google IO lecture
Writing real-time games for Android redux
grab the PDF also
it's really helpful on many levels, Chris has really great experience with creating games for mobile devices
but if you are really focused on 2D then start with Canvas
http://developer.android.com/guide/topics/gra...