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How do I determine the target architecture of static library (.a) on Mac OS X?
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Now in 2015 you should use lipo. See the answer below.
– derFunk
Feb 12 '15 at 11:10
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How Do I Fetch All Old Items on an RSS Feed?
... like this talked about as an extension to the ATOM protocol, but I don't know if it is actually implemented anywhere.
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Equivalent of varchar(max) in MySQL?
...ATE TABLE foo ( v VARCHAR(65532) );
Query OK, 0 rows affected (0.01 sec)
Now if we try to use a multibyte charset at the table level, we find that it counts each character as multiple bytes. UTF8 strings don't necessarily use multiple bytes per string, but MySQL can't assume you'll restrict all yo...
Can't create handler inside thread that has not called Looper.prepare()
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I know I am a little late but here goes.
Android basically works on two thread types namely UI thread and background thread. According to android documentation -
Do not access the Android UI toolkit from outside the UI thre...
Java: how do I get a class literal from a generic type?
...he additional explanation--my understanding of generics is so much clearer now that I realize they're not a runtime mechanism. :)
– Tom
Mar 5 '10 at 23:49
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Why can't enum's constructor access static fields?
...kind of a phantom method (can't see the source in Enum.class) and i don't know when its created
– Chirlo
Oct 13 '12 at 13:51
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__lt__ instead of __cmp__
...ot self<other
def __le__(self, other):
return not other<self
Now your class can define just __lt__ and multiply inherit from ComparableMixin (after whatever other bases it needs, if any). A class decorator would be quite similar, just inserting similar functions as attributes of the ne...
Instance variable: self vs @
...e birthdate and then calculate age based on the difference in time between now and the birthdate -- then the code depending on the method doesn't need to change. If it used the property directly, then the change would need to propagate to other areas of the code. In this sense, using the property ...
What is a mutex?
...rom a thread, it merely gives it to you, and lock() returns - the mutex is now yours and only yours. Nobody else can steal it, because calling lock() will block him. There is also try_lock() that will block and return true when mutex is yours and immediately false if mutex is in use.
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Select random lines from a file
...lines_78000000000.txt
This gives me a a file with 78 Billion newlines ;-)
Now for the shuf part:
$ time shuf -n 10 lines_78000000000.txt
shuf -n 10 lines_78000000000.txt 2171.20s user 22.17s system 99% cpu 36:35.80 total
The bottleneck was CPU and not using multiple threads, it pinned ...