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Does Java casting introduce overhead? Why?
...
Now the article is almost 20 years old. And the answers are also many years old. This question needs a modern answer.
– Raslanove
May 7 '19 at 6:00
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Seeding the random number generator in Javascript
...algorithms that use 32-bit math, as it is directly compatible with JS.
Now, onward to the the generators. (I maintain the full list with references here)
sfc32 (Simple Fast Counter)
sfc32 is part of the PractRand random number testing suite (which it passes of course). sfc32 has a 128-bit s...
MySQL 'create schema' and 'create database' - Is there any difference
...iew names. All tables and views were
created within a "schema". I do not know whether that version defined
some cross-schema access to tables and views, but I assume it did.
AFAIR, no product (at least back then) really implemented it, that whole
concept was more theory than practice.
OTOH, IS...
Creating a singleton in Python
... http://googletesting.blogspot.com/2008/08/root-cause-of-singletons.html:
Now, there is one kind of Singleton which is OK. That is a singleton where all of the reachable objects are immutable. If all objects are immutable than Singleton has no global state, as everything is constant. But it is so e...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ee possibilities can occur where you won't get a unique ID (please let me know if there are more):
Before this discussion, recall that the BSON Object ID consists of:
[4 bytes seconds since epoch, 3 bytes machine hash, 2 bytes process ID, 3 bytes counter]
Here are the three possibilities, so you ...
Difference between a Postback and a Callback
...n I started programming in C (maybe the term existed before that, I don't know) and it simply means a pointer to function and this pointer to a function (name this A) gets passed to another function (name this B) which will later invoke A. Callback is also recently used by Yahoo UI Connection Manag...
Getting vertical gridlines to appear in line plot in matplotlib
...ength=20, color='b')
ax.tick_params(which='minor', length=10, color='r')
Now to force the grid lines to be appear also on the Minor tick-marks, pass the which='minor' to the method:
ax.grid(b=True, which='minor', axis='x', color='#000000', linestyle='--')
or simply use which='both' to draw both...
Why is my program slow when looping over exactly 8192 elements?
...9;
}
}
So that leaves the two outer-loops that we're interested in.
Now we can see the problem is the same in this question: Why does the order of the loops affect performance when iterating over a 2D array?
You are iterating the matrix column-wise instead of row-wise.
To solve this probl...
In Matlab, when is it optimal to use bsxfun?
...viously, this functionality was available via the bsxfun function.
It is now recommended that you replace most uses of bsxfun with direct
calls to the functions and operators that support implicit expansion.
Compared to using bsxfun, implicit expansion offers faster speed,
better memory usag...
How are zlib, gzip and zip related? What do they have in common and how are they different?
...which is another format that wraps around deflate compressed data.
zlib is now in wide use for data transmission and storage. For example, most HTTP transactions by servers and browsers compress and decompress the data using zlib, specifically HTTP header Content-Encoding: deflate means deflate com...