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What does “Document-oriented” vs. Key-Value mean when talking about MongoDB vs Cassandra?
... opaque, the store doesn't know anything about them. This allows very fast read and write operations (a simple disk access) and I see this model as a kind of non volatile cache (i.e. well suited if you need fast accesses by key to long-lived data).
A document-oriented database extends the previous ...
Is the 'override' keyword just a check for a overridden virtual method?
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* note: the output parameter is sometimes of different, but related type. Read about covariant and contravariant transformations if interested.
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Code signing certificate for open-source projects?
... longer free, now €105.78 (as of 19 Feb 2017). The cost is less if you already own their crypto hardware. FWIW, following are the previous instructions.
The get a free code signing certificate from Certum/Unizeto for yourself as an individual, follow these steps. Use Internet Explorer or Safari...
How do I provide custom cast support for my class?
...n to declare any conversion operators in the first place because.
Further reading is available on MSDN.
class Program
{
class EncodedString
{
readonly byte[] _data;
public readonly Encoding Encoding;
public EncodedString(byte[] data, Encoding encoding)
{
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Efficient evaluation of a function at every cell of a NumPy array
...former array in your original question. I'm sorry I missed that when first reading it. Yeah, in that case the double loop must be faster. But have you also tried a single loop on the flattened view of the array? That might be slightly faster, since you save a little loop overhead and Numpy needs to ...
How many bytes does one Unicode character take?
...standard, and I didn't find anything about encoding, and the article I was reading didn't go into enough detail to tell how many bits are used to represent the number of trailing code points per "character".
– MarcusJ
Sep 26 '16 at 16:09
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Convert floating point number to a certain precision, and then copy to string
...mat method, but make it a bit nicer.
Example:
print(f'{numvar:.9f}')
More reading about the new f string:
What's new in Python 3.6 (same link as above)
PEP official documentation
Python official documentation
Really good blog post - talks about performance too
Here is a diagram of the execution t...
Cancellation token in Task constructor: why?
Certain System.Threading.Tasks.Task constructors take a CancellationToken as a parameter:
4 Answers
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How to properly compare two Integers in Java?
...ing-in-java etc explain in-detail the matter you mentioned; it's better to read the docs (or lib source) than to create pseudo-tests with the risk of high locality of the results - not only have you completely forgotten about the lower bound of the cache (i.e. -128 by default), not only you have off...
What generates the “text file busy” message in Unix?
... does it give an error if you try to write without unlink. Does Linux ever read the file more than once after the first exec call?
– Ciro Santilli 郝海东冠状病六四事件法轮功
Sep 22 '18 at 20:25
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