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What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...se of wstrings and wchar_t , and their use in the windows api. What is em>x m>actly "wrong" with wchar_t and wstring , and if I want to support internationalization, what are some alternatives to wide characters?
...
python dataframe pandas drop column using int
I understand that to drop a column you use df.drop('column name', am>x m>is=1). Is there a way to drop a column using a numerical indem>x m> instead of the column name?
...
Label encoding across multiple columns in scikit-learn
...r ago, and generated many upvotes (including a bounty), I should probably em>x m>tend this further.
For inverse_transform and transform, you have to do a little bit of hack.
from collections import defaultdict
d = defaultdict(LabelEncoder)
With this, you now retain all columns LabelEncoder as diction...
Why is super.super.method(); not allowed in Java?
...our (particularly from within the same method) but not your parent's. For em>x m>ample, suppose we have a base "collection of items", a subclass representing "a collection of red items" and a subclass of that representing "a collection of big red items". It makes sense to have:
public class Items
{
...
Pythonic way to print list items
...
Assuming you are using Python 3.m>x m>:
print(*myList, sep='\n')
You can get the same behavior on Python 2.m>x m> using from __future__ import print_function, as noted by mgilson in comments.
With the print statement on Python 2.m>x m> you will need iteration of some ...
The smallest difference between 2 Angles
...
A more concise, though potentially more em>x m>pensive, equivalent of the latter approach's second statement, is a -= 360*sgn(a)*(abs(a) > 180). (Come to think of it, if you've branchless implementations of sgn and abs, then that characteristic might actually start to...
How to sort an array in descending order in Ruby
...{
ary << {:bar => rand(1000)}
}
n = 500
Benchmark.bm(20) do |m>x m>|
m>x m>.report("sort") { n.times { ary.sort{ |a,b| b[:bar] <=> a[:bar] } } }
m>x m>.report("sort reverse") { n.times { ary.sort{ |a,b| a[:bar] <=> b[:bar] }.reverse } }
m>x m>.report("sort_by -a[:bar]...
Paging UICollectionView by cells, not screen
...h;
int minSpace = 10;
int cellToSwipe = (scrollView.contentOffset.m>x m>)/(pageWidth + minSpace) + 0.5; // cell width + min spacing for lines
if (cellToSwipe < 0) {
cellToSwipe = 0;
} else if (cellToSwipe >= self.articles.count) {
cellToSwipe = self.articles.count -...
Iterating over dictionaries using 'for' loops
... To loop over both key and value you can use the following:
For Python 3.m>x m>:
for key, value in d.items():
For Python 2.m>x m>:
for key, value in d.iteritems():
To test for yourself, change the word key to poop.
In Python 3.m>x m>, iteritems() was replaced with simply items(), which returns a set-like ...
What does “@private” mean in Objective-C?
.... Private members cannot be accessed by subclasses or other classes.
For em>x m>ample:
@interface MyClass : NSObject
{
@private
int someVar; // Can only be accessed by instances of MyClass
@public
int aPublicVar; // Can be accessed by any object
}
@end
Also, to clarify, methods are...