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Defining private module functions in python
...er-score)
Such a variable has its name "mangled" to include the classname etc.
It can still be accessed outside of the class logic, through the mangled name.
Although the name mangling can serve as a mild prevention device against unauthorized access, its main purpose is to prevent possible name co...
How to update a plot in matplotlib?
...ide your for loop, just before you call graph1.plot(...), graph2.plot(...) etc...
– Joe Kington
Nov 4 '10 at 18:49
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How to loop through all the files in a directory in c # .net?
...hrought the files and has some really nice tips, like filtering techniques etc.
http://www.codeproject.com/Tips/512208/Folder-Directory-Deep-Copy-including-sub-directori
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Initialize class fields in constructor or at declaration?
... you should not initialize members to their default values (0, false, null etc.), since the compiler will do that for you (1.). But if you want to initialize a field to anything other than its default value, you should do it in the declaration (2.). I think that it might be the usage of the word "de...
What is the difference between the | and || or operators?
... know what that is. It's used in conditional statements such as if, while, etc.
condition1 || condition2
Evaluates to true if either condition1 OR condition2 is true.
| is the bitwise OR operator. It's used to operate on two numbers. You look at each bit of each number individually and, if one o...
Returning a value from thread?
...thod - you don't normally "return" a value.
However, if you're trying to fetch a value back from the results of some processing, you have many options, the two main ones being:
You can synchronize a shared piece of data, and set it appropriately.
You can also pass the data back in some form of ...
What is the difference between compare() and compareTo()?
...m as an object that you can pass as a parameter, save in a data structure, etc.
If your class objects have one natural sorting order, you may not need compare().
Summary from http://www.digizol.com/2008/07/java-sorting-comparator-vs-comparable.html
Comparable
A comparable object is capable o...
How do I find a “gap” in running counter with SQL?
...e( name ) select name from artificial_range;
-- you now have eight rows
--etc.
insert into artificial_range( name ) select name from artificial_range;
-- you now have 1024 rows, with ids 1-1024
Then,
select a.id from artificial_range a
where not exists ( select * from your_table b
where b.co...
Multiple linear regression in Python
... dependent variable (y) against several independent variables (x1, x2, x3, etc.).
13 Answers
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Boolean vs boolean in Java
... in Compilation and Runtime (a bit far going but almost as instanceof vs. getClass()).
Finally, autoboxing is slower than primitives
Note the fact that Java can do autoboxing is just a "syntactic sugar". It does not speed up anything, just allows you to write less code. That's it. Casting and wra...