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defaultdict of defaultdict?
...defaultdict(<type 'int'>, {})
>>> print d[0]["x"]
0
Since Python 2.7, there's an even better solution using Counter:
>>> from collections import Counter
>>> c = Counter()
>>> c["goodbye"]+=1
>>> c["and thank you"]=42
>>> c["for the fish"...
What are the minimum margins most printers can handle?
...pt Printer Description (PPD). PPDs are used in the CUPS printing system on Linux and Mac OS X as well even for non-PostScript printers.
Every PPD MUST, according to the PPD specification written by Adobe, contain definitions of a *ImageableArea (that's a PPD keyword) for each and every media sizes ...
Get loop counter/index using for…of syntax in JavaScript
... Oh ok. I was confused. I thought JavaScript's for-in was the same as Python's. Thanks for the clarification.
– hobbes3
Apr 16 '12 at 18:51
1
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A worthy developer-friendly alternative to PayPal [closed]
...pe.com/docs/testing
Good example API implementations, preferably in in Python or Ruby
Stripe has official libraries in Python, Ruby, PHP and Java, and there are more community-supported ones here: https://stripe.com/docs/libraries
Worldwide credit/debit card coverage
You can charge all i...
Define css class in django Forms
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Yet another solution that doesn't require changes in python code and so is better for designers and one-off presentational changes: django-widget-tweaks. Hope somebody will find it useful.
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How to execute a JavaScript function when I have its name as a string
... to this other question shows you how to do that: Javascript equivalent of Python's locals()?
Basically, you can say
window["foo"](arg1, arg2);
or as many others have suggested, you can just use eval:
eval(fname)(arg1, arg2);
although this is extremely unsafe unless you're absolutely sure abo...
What is NODE_ENV and how to use it in Express?
...e environment variable as a one-off, you can do so from the command line:
linux & mac: export NODE_ENV=production
windows: $env:NODE_ENV = 'production'
In the long term, you should persist this so that it isn't unset if you reboot - rather than list all the possible methods to do this, I'll le...
Execute code when Django starts ONCE only?
...eload" option prevents runserver from executing command on startup twice:
python manage.py runserver --noreload
But that command won't reload runserver after other code's changes as well.
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Which websocket library to use with Node.js? [closed]
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A small detail for ws is that it needs python. So if you deploy on docker containers or something, you'll need to have python available to use ws.
– AntouanK
Mar 8 '15 at 14:00
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What is the purpose of the EBP frame pointer register?
...e exceptions, too. You'll find it (with objdump -h) in most binaries on a Linux system, It's about 16k for /bin/bash, vs. 572B for GNU /bin/true, 108k for ffmpeg. There is a gcc option to disable generating it, but it's a "normal" data section, not a debug section that strip removes by default. ...