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Difference between `constexpr` and `const`
...tant expression
[This is due to §5.19/2: A constant expression must not include a subexpression that involves "an lvalue-to-rvalue modification unless […] a glvalue of integral or enumeration type […]" Thanks to Richard Smith for correcting my earlier claim that this was true for all literal ...
How to unit test abstract classes: extend with stubs?
...mentation.
At that point I would no longer want their public interface to include the settings accessor methods; so I will change this class to encapsulate a settings parser class instead of derive from it.
The Abstract class is therefore: a way for me to avoid delegation code at the moment, and ...
return, return None, and no return at all?
...nction basically works as a procedure instead of a function, so just don't include the return statement.
If you are writing a procedure-like function and there is an opportunity to return earlier (i.e. you are already done at that point and don't need to execute the remaining of the function) you m...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...ol that city is ;-) Just kidding!!!.
Now, less similar documents may also include references to both cities, but in different proportions. Maybe Doc2 would only cite Paris once and London seven times.
Back to our x-y plane, if we draw these hypothetical documents, we see that when they are VERY si...
What is the “volatile” keyword used for?
...d in the original XBox 360 had weakly ordered memory. Many ARM processors, including the very popular ARMv7-A have weakly ordered memory.
Developers often don't see these data races because things like locks will do a full memory barrier, essentially the same thing as acquire and release semantics ...
How do you run a Python script as a service in Windows?
...
Yes you can. I do it using the pythoncom libraries that come included with ActivePython or can be installed with pywin32 (Python for Windows extensions).
This is a basic skeleton for a simple service:
import win32serviceutil
import win32service
import win32event
import servicemanager...
How does Hadoop process records split across block boundaries?
...
In cases where the last record in a block is incomplete, the input split includes location information for the next block and the byte offset of the data needed to complete the record.
Have a look at below diagram.
Have a look at this article and related SE question : About Hadoop/HDFS file sp...
Is it possible to read from a InputStream with a timeout?
...the entire history of JSSE, and I've worked with since before it was first included in Java 1.4 in 2002.
– Marquis of Lorne
Dec 16 '15 at 4:55
...
A type for Date only in C# - why is there no Date type?
...and .NET.
Serializing a DateTime with XML or JSON (and others) will always include the time, even if it's not important. This is very confusing, especially considering things like birth dates and anniversaries, where the time is irrelevant.
Architecturally, DateTime is a DDD value-object, but it vi...
What issues should be considered when overriding equals and hashCode in Java?
...
else {
return this.getId().equals(other.getId());
}
But: you cannot include getId() in hashCode(). If you do, when an object is persisted, its hashCode changes. If the object is in a HashSet, you'll "never" find it again.
In my Person example, I probably would use getName() for hashCode and ...