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What's an appropriate HTTP status code to return by a REST API service for a validation failure?

I'm currently returning 401 Unauthorized whenever I encounter a validation failure in my Django / Piston based REST API application. Having had a look at the HTTP Status Code Registry I'm not convinced that this is an appropriate code for a validation failure, what do y'all recommend? ...
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Multiple Inheritance in C#

... answered Nov 8 '09 at 7:09 IanNortonIanNorton 6,43011 gold badge2222 silver badges2727 bronze badges ...
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Get all unique values in a JavaScript array (remove duplicates)

...LindigTLindig 31.3k22 gold badges2323 silver badges3030 bronze badges 64 ...
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Rails migration for has_and_belongs_to_many join table

... | edited Jun 19 '14 at 10:20 answered May 6 '11 at 22:18 ...
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How to list the properties of a JavaScript object?

... 1091 In modern browsers (IE9+, FF4+, Chrome5+, Opera12+, Safari5+) you can use the built in Object....
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FormsAuthentication.SignOut() does not log the user out

... | edited Sep 15 '16 at 20:25 dana 14.5k22 gold badges4949 silver badges7777 bronze badges answered Aug...
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Why is “origin/HEAD” shown when running “git branch -r”?

... 140 @robinst is correct. In git, you can select which branch is checked out by default (i.e. when y...
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Python - List of unique dictionaries

..., ... {'id':1,'name':'john', 'age':34}, ... {'id':2,'name':'hanna', 'age':30}, ... ] >>> {v['id']:v for v in L}.values() [{'age': 34, 'id': 1, 'name': 'john'}, {'age': 30, 'id': 2, 'name': 'hanna'}] In Python3 >>> L=[ ... {'id':1,'name':'john', 'age':34}, ... {'id':1,'name':'joh...
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How to execute XPath one-liners from shell?

... | edited Jun 28 at 23:40 answered Mar 17 '13 at 14:19 Gi...
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Git Clone: Just the files, please?

...ion of the command git, not git clone. Update with Git 2.14.X/2.15 (Q4 2017): it will make sure to avoid adding empty folders. "git archive", especially when used with pathspec, stored an empty directory in its output, even though Git itself never does so. This has been fixed. See commi...