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Django's SuspiciousOperation Invalid HTTP_HOST header
...D_HOSTS is set correctly, then it is possible someone is probing your site for the vulnerability by spoofing the header.
There is discussion right now by the Django developers to change this from a 500 internal server error to a 400 response. See this ticket.
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Checking if an instance's class implements an interface?
...xtension.
See: http://php.net/manual/en/function.class-implements.php
Performance Tests
Some simple performance tests show the costs of each approach:
Given an instance of an object
Object construction outside the loop (100,000 iterations)
____________________________________________
| class_...
Chrome Dev Tools - “Size” vs “Content”
When viewing information about stylesheets in the Network tab of Chrome's dev tools, one column specifies both "size" and "content":
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SQL update trigger only when column is modified
...sn't seem to work as I would like: I want it to only update the modified information if the QtyToRepair value has been updated... but it doesn't do that.
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How are 3D games so efficient? [closed]
... they need to render, and
They take special advantage of your hardware.
For instance, one easy optimization you can make involves not actually trying to draw things that can't be seen. Consider a complex scene like a cityscape from Grand Theft Auto IV. The renderer isn't actually rendering all of...
With bash, how can I pipe standard error into another process?
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There is also process substitution. Which makes a process substitute for a file.
You can send stderr to a file as follows:
process1 2> file
But you can substitute a process for the file as follows:
process1 2> >(process2)
Here is a concrete example that sends stderr to both the ...
Using multiple let-as within a if-statement in Swift
I'm unwrapping two values from a dictionary and before using them I have to cast them and test for the right type. This is what I came up with:
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
...m r1.
This set operation appears so often
that there is a shorthand for it. When
you have two commits r1 and r2 (named according to the syntax explained in
SPECIFYING REVISIONS above), you can
ask for commits that are reachable
from r2 excluding those that are
reachable from r1 b...
App restarts rather than resumes
...someone can help me figure out, if not a solution, at least an explanation for a behaviour.
9 Answers
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How to load/edit/run/save text files (.py) into an IPython notebook cell?
...same name already exists it will be silently overwritten.
To see the help for any magic command add a ?: like %load? or %%writefile?.
For general help on magic functions type "%magic"
For a list of the available magic functions, use %lsmagic. For a description
of any of them, type %magic_name?, e....