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Finding the source code for built-in Python functions?
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How to secure MongoDB with username and password
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86
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Filtering for empty or NULL names in a queryset
...ield = TRUE AND other_field = TRUE)
Alternatively, if your logic is more complex than that, you could use Django's Q objects:
from django.db.models import Q
Name.objects.exclude(Q(alias__isnull=True) | Q(alias__exact=''))
For more info see this page and this page in the Django docs.
As an asid...
How to implement __iter__(self) for a container object (Python)
...elf):
return self
but __iter__() can also be used like this:
http://mail.python.org/pipermail/tutor/2006-January/044455.html
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follo...
What's the fastest way to delete a large folder in Windows?
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Use Windows Command Prompt:
rmdir /s /q folder
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How do I correctly clone a JavaScript object?
...appy to be wrong!
When I had to implement general deep copying I ended up compromising by assuming that I would only need to copy a plain Object, Array, Date, String, Number, or Boolean. The last 3 types are immutable, so I could perform a shallow copy and not worry about it changing. I further ass...
What reason is there to use null instead of undefined in JavaScript?
...ect was expected (or that there was an error). My problem with that is its completely arbitrary, and totally unnecessary.
That said, there is one major difference - variables that aren't initialized (including function parameters where no argument was passed, among other things) are always undefin...
How to convert existing non-empty directory into a Git working directory and push files to a remote
...l> and an empty repository:
cd <localdir>
git init
git add .
git commit -m 'message'
git remote add origin <url>
git push -u origin master
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Read/Write 'Extended' file properties (C#)
...g to find out how to read/write to the extended file properties in C#
e.g. Comment, Bit Rate, Date Accessed, Category etc that you can see in Windows explorer.
Any ideas how to do this?
EDIT: I'll mainly be reading/writing to video files (AVI/DIVX/...)
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Best way to detect that HTML5 is not supported
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var cvsEl, ctx;
if (!window.WebGLRenderingContext)
window.location = "http://get.webgl.org";
else {
cvsEl = document.createElement("canvas");
ctx = cvsEl.getContext("webgl") || cvsEl.getContext("experimental-webgl");
if (!ctx) {
// Browser supports WebGL, but cannot create ...