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What is a good Hash Function?
...is the best I've ever used.
http://www.azillionmonkeys.com/qed/hash.html
If you care about cryptographically secure or anything else more advanced, then YMMV. If you just want a kick ass general purpose hash function for a hash table lookup, then this is what you're looking for.
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What is a memory fence?
...nly found in device drivers than application code.
The CPU reordering is different from compiler optimisations - although the artefacts can be similar. You need to take separate measures to stop the compiler reordering your instructions if that may cause undesirable behaviour (e.g. use of the volat...
Post JSON using Python Requests
...thon.org/pypi/requests), the "json" parameter is supported. No need to specify "Content-Type". So the shorter version:
requests.post('http://httpbin.org/post', json={'test': 'cheers'})
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How to set target hosts in Fabric file
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Or if the task is always run on the same role, you can use the @roles() decorator on the task.
– Tom
Aug 14 '12 at 18:19
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libpng warning: iCCP: known incorrect sRGB profile
...CCP chunk from the PNG image.
Some applications treat warnings as errors; if you are using such an application you do have to remove the chunk. You can do that with any of a variety of PNG editors such as ImageMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG ...
What's the difference between URI.escape and CGI.escape?
...es how data should be encoded/decode between web server and application.
Now, let's say that you need to escape a URI in your app. It is a more specific use case.
For that, the Ruby community used URI.escape for years. The problem with URI.escape was that it could not handle the RFC-3896 spec.
UR...
Why am I getting a “401 Unauthorized” error in Maven?
...act to a Nexus Sonatype repository. You will get a 401 Unauthorized error if you supply the wrong credentials (password etc). You also get an error (and off the top of my head is also a 401) if you try to publish something to a releases repository and that version already exists in the repository....
How to structure a express.js application?
...dule.exports = mongoose.model('PhoneNumber', PhoneNumberSchema);
and then if I need to create a phone number, it's as simple as:
var PhoneNumber = require('../models/phoneNumber');
var phoneNumber = new PhoneNumber();
if I need to use the schema, then PhoneNumber.schema
(which assumes that we are ...
What generates the “text file busy” message in Unix?
...eck what other processes are using it. You can use kill command to kill it if needed.
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How Big can a Python List Get?
...answered May 12 '09 at 23:48
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