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How to make a class property? [duplicate]

...class ClassPropertyDescriptor(object): def __init__(self, fget, fset=None): self.fget = fget self.fset = fset def __get__(self, obj, klass=None): if klass is None: klass = type(obj) return self.fget.__get__(obj, klass)() def __set__(self, ob...
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Why is MATLAB so fast in matrix multiplication?

...entations (I was not born or a kid back then), but two of the most notable ones came out in the early 2000s: the Intel MKL and GotoBLAS. Your Matlab uses the Intel MKL, which is a very good, optimized BLAS, and that explains the great performance you see. Technical details on Matrix multiplication:...
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How long is the SHA256 hash?

... +1 - I like optimized...to anyone else happening on this...to use this with MySQL...you can use UPDATE...SET hash_column=UNHEX(sha256HexString). Then, when retrieving it, you SELECT HEX(hash_column) AS hash_column. – Kevin Nelson ...
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What is event bubbling and capturing?

What is the difference between event bubbling and capturing? When should one use bubbling vs capturing? 6 Answers ...
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What's the difference between emulation and simulation? [duplicate]

...ce/platform, it does just enough for its own purposes. For example, the iPhone Simulator runs an "iPhone app" that has been specifically compiled to target x86 and the Cocoa API rather than the real device's ARM CPU and Cocoa Touch API. However, the binary that we run in the simulator would not work...
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initializing a boolean array in java

... your example you are referring to an element that is outside the array by one. It should probably be something like freq[Global.iParameter[2]-1]=false; You would need to loop through the array to initialize all of it, this line only initializes the last element. Actually, I'm pretty sure that ...
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How to round the minute of a datetime object

...ction to round a datetime at any time lapse in seconds: def roundTime(dt=None, roundTo=60): """Round a datetime object to any time lapse in seconds dt : datetime.datetime object, default now. roundTo : Closest number of seconds to round to, default 1 minute. Author: Thierry Husson 2012 ...
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NSLog/printf specifier for NSInteger?

...e underlying types for size_t and ssize_t have changed. I don't know which one, but %zd stopped working some time ago. There is no format today that will print NSInteger without warning on both 32 and 64 bit systems. So the only thing you can do unfortunately: Use %ld, and cast your values from NS...
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How to make a JSONP request from Javascript without JQuery?

...ient application/ script. When is JSONP needed? It is 1 method of allowing one domain to access/ process data from another in the same page asyncronously. Primarily, it is used to override CORS (Cross Origin Resource Sharing) restrictions which would occur with an XHR (ajax) request. Script loads ar...
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List Git aliases

... I like this one because it gets rid of the alias. at the beginning of each line – Brian J Jun 16 '14 at 14:34 3 ...