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Python `if x is not None` or `if not x is None`?
...he if not x is None version to be more clear, but Google's style guide and PEP-8 both use if x is not None . Is there any minor performance difference (I'm assuming not), and is there any case where one really doesn't fit (making the other a clear winner for my convention)?*
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“implements Runnable” vs “extends Thread” in Java
...purer" way to go.
In practical terms, it means you can implement Runnable and extend from another class as well.
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Object comparison in JavaScript [duplicate]
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Unfortunately there is no perfect way, unless you use _proto_ recursively and access all non-enumerable properties, but this works in Firefox only.
So the best I can do is to guess usage scenarios.
1) Fast and limited.
Works when you have simple JSON-style objects without methods and DOM nodes...
What do commas and spaces in multiple classes mean in CSS?
Here is an example that I do not understand:
9 Answers
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How do I write good/correct package __init__.py files
...s.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is needed
I think one of the most powerful reasons to use import * in an __init__.py to import packages is to be able to refactor a script that has grown into multiple scripts without ...
What are Scala context and view bounds?
In a simple way, what are context and view bounds and what is the difference between them?
1 Answer
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How do you count the lines of code in a Visual Studio solution?
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Ultimate and Premium, I think
– Stefan Dragnev
Aug 29 '11 at 16:42
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Python, Unicode, and the Windows console
... the solution below with care!!
Here is a page that details the problem and a solution (search the page for the text Wrapping sys.stdout into an instance):
PrintFails - Python Wiki
Here's a code excerpt from that page:
$ python -c 'import sys, codecs, locale; print sys.stdout.encoding; \
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How to check if an app is installed from a web-page on an iPhone?
...pp is installed or not.
But you can try redirecting the phone to the app, and if nothing happens redirect the phone to a specified page, like this:
setTimeout(function () { window.location = "https://itunes.apple.com/appdir"; }, 25);
window.location = "appname://";
If the second line of code giv...
Understanding “randomness”
I can't get my head around this, which is more random?
28 Answers
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