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Multiprocessing: How to use Pool.map on a function defined in a class?
...rictions on what sort of functions pool.map could accept. I wrote the following to circumvent this. It appears to work, even for recursive use of parmap.
from multiprocessing import Process, Pipe
from itertools import izip
def spawn(f):
def fun(pipe, x):
pipe.send(f(x))
pipe.clo...
Async call with await in HttpClient never returns
...a call I am making from inside a xaml-based, C# metro application on the Win8 CP; this call simply hits a web service and returns JSON data.
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Making a property deserialize but not serialize with json.net
...rialization.Json & Newtonsoft.Json) and it worked for me like the following:
flag all your class and sub-classes as "DataContract".
flag all the properties of your class and sub-classes as "DataMember".
flag all the properties of your class and sub-classes as "JsonProperty" except those you ...
Advantages of std::for_each over for loop
..., replace, etc and these won't look so strange anymore. This can be a huge win.
Update 1:
Most importantly, it helps you go beyond for_each vs. for-loops like that's all there is, and look at the other STL-alogs, like find / sort / partition / copy_replace_if, parallel execution .. or whatever.
A ...
Advantage of switch over if-else statement
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This immediate-constant bitmap is a big win, because there's no cache miss on the bitmap. It works if the "special" error codes are all in a range 64 or less. (or 32 for legacy 32bit code.) The compiler subtracts the smallest case value, if it's non-zero. The t...
How to convert An NSInteger to an int?
...stem.
#if __LP64__ || TARGET_OS_EMBEDDED || TARGET_OS_IPHONE || TARGET_OS_WIN32 || NS_BUILD_32_LIKE_64
typedef long NSInteger;
#else
typedef int NSInteger;
#endif
You can use NSInteger any place you use an int without converting it.
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What is the difference between memmove and memcpy?
...than memcpy and if you are unlucky, it may even be slower, so you can only win calling memcpy.
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Python __call__ special method practical example
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@delnan: This is not intended to be shortest. No one wins at code golf. It's intended to show __call__, be simple and nothing more.
– S.Lott
Apr 28 '11 at 21:06
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How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
...ins the info you need in the Machine member which contains one of the following values
IMAGE_FILE_MACHINE_I386 (0x014c)
IMAGE_FILE_MACHINE_IA64 (0x0200)
IMAGE_FILE_MACHINE_AMD64 (0x8664)
This information should be at a fixed offset in the file, but I'd still recommend traversing the file and che...
Hashset vs Treeset
...tation of bubble sort (O(N^2) avg/worst) for 10 elements. Bubble sort will win every time. The point is algorithms classes teach everyone to think about approximations using time-complexity but in the real world the constant factors MATTER frequently.
– Peter Oehlert
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