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Rotating a two-dimensional array in Python
...hat zip does, it will group elements from each input iterable based on index, or in other words it groups the columns.
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What do two question marks together mean in C#?
...tor - MSDN.
FormsAuth = formsAuth ?? new FormsAuthenticationWrapper();
expands to:
FormsAuth = formsAuth != null ? formsAuth : new FormsAuthenticationWrapper();
which further expands to:
if(formsAuth != null)
FormsAuth = formsAuth;
else
FormsAuth = new FormsAuthenticationWrapper();
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Append integer to beginning of list in Python [duplicate]
...errors. The compiler handles a as integer, thus I cannot use append, or extend either.
How would you do this?
10 Answers...
How do I determine the current operating system with Node.js
...dows, it returns win32 (even on 64 bit).
Current possible values are:
aix
darwin
freebsd
linux
openbsd
sunos
win32
I just set this at the top of my jakeFile:
var isWin = process.platform === "win32";
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How to list npm user-installed packages?
... If you install your modules at another folder using --prefix, then you need to add the --prefix too into this npm list command.
– Sany Liew
Aug 6 '18 at 4:06
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Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
One mistake I see people making over and over again is trying to parse XML or HTML with a regex. Here are a few of the reasons parsing XML and HTML is hard:
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Understanding Spliterator, Collector and Stream in Java 8
...object that you'll almost always use in a fluent chain, as in the Javadoc example:
int sum = widgets.stream()
.filter(w -> w.getColor() == RED)
.mapToInt(w -> w.getWeight())
.sum();
Collector is the most generalized, abstract possible ve...
Extracting extension from filename in Python
Is there a function to extract the extension from a filename?
24 Answers
24
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sprintf like functionality in Python
...uffer to do lots of processing, format and finally write the buffer in a text file using a C-style sprintf functionality in Python. Because of conditional statements, I can’t write them directly to the file.
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How do I get list of methods in a Python class?
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An example (listing the methods of the optparse.OptionParser class):
>>> from optparse import OptionParser
>>> import inspect
#python2
>>> inspect.getmembers(OptionParser, predicate=inspect.ismethod)
[...