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Properly removing an Integer from a List
Here's a nice pitfall I just encountered.
Consider a list of integers:
8 Answers
8
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Using Python's os.path, how do I go up one directory?
...lpath(dirname(__file__))), 'templates')
Update:
If you happen to "copy" settings.py through symlinking, @forivall's answer is better:
~user/
project1/
mysite/
settings.py
templates/
wrong.html
project2/
mysite/
settings.py -&...
Java: possible to line break in a properties file?
... editor after snippets, if snippets enabled
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RegEx match open tags except XHTML self-contained tags
...sible, it's sometimes appropriate to use them for parsing a limited, known set of HTML.
If you have a small set of HTML pages that you want to scrape data from and then stuff into a database, regexes might work fine. For example, I recently wanted to get the names, parties, and districts of Aust...
How to easily truncate an array with JavaScript?
...plice(-2,2); // a1=[2,4], a2=[6,8]
If you're asking how to retrieve a subset of an array without modifying the original, then use slice.
var a1 = [2,4,6,8];
var a2 = a1.slice(-2); // a1=[2,4,6,8], a2=[6,8]
Just remember splice modifies, slice accesses. Negative numbers as first arg indicate ind...
Django gives Bad Request (400) when DEBUG = False
...True , it's running perfectly. But when I change DEBUG to False in the settings file, then the server stopped and it gives the following error on the command prompt:
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Why is rbindlist “better” than rbind?
...s of memory rbindlist is implemented in C, so is memory efficient, it uses setattr to set attributes by reference
rbind.data.frame is implemented in R, it does lots of assigning, and uses attr<- (and class<- and rownames<- all of which will (internally) create copies of the created data.fr...
How to count the frequency of the elements in an unordered list?
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It's faster using a set: {x:a.count(x) for x in set(a)}
– stenci
Feb 17 '16 at 17:55
45
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Python multiprocessing PicklingError: Can't pickle
...the error with a simpler example, and my code is too complicated to post. If I run the program in IPython shell instead of the regular Python, things work out well.
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How to insert newline in string literal?
In .NET I can provide both \r or \n string literals, but there is a way to insert
something like "new line" special character like Environment.NewLine static property?
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