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Unique fields that allow nulls in Django
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Django has not considered NULL to be equal to NULL for the purpose of uniqueness checks since ticket #9039 was fixed, see:
http://code.djangoproject.com/ticket/9039
The issue here is that the normalized "blank" value for a form CharField is an empty string, not None. So if ...
How do you calculate program run time in python? [duplicate]
... also might come in handy, although I prefer the later two recommendations for benchmarking and profiling code performance:
http://docs.python.org/library/time.html
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Fatal error: “No Target Architecture” in Visual Studio
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Heads up: seems including Xinput.h before Windows.h causes this too.
– Jens Åkerblom
Oct 27 '16 at 19:26
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WARN Could not determine content-length of response body. Set content-length of the response or set
...ile to get a clean install of thin: gem 'eventmachine', '1.0.0.rc.4', :platforms => [:mswin, :mingw]. Note: I installed Rails via the RailsInstaller which includes the DevKit. Might not work without it(?).
– Spiralis
Aug 29 '12 at 12:30
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static linking only some libraries
...nd modern versions of the link environment (I'm not sure of the status quo for modestly old versions as of November 2010), listing the static library before the code.c file guarantees that the symbols in it will be ignored unless there happens to be a main() function in one of the library object fil...
How do I output an ISO 8601 formatted string in JavaScript?
...g/en/Core_JavaScript_1.5_Reference:Global_Objects:Date:
/* Use a function for the exact format desired... */
function ISODateString(d) {
function pad(n) {return n<10 ? '0'+n : n}
return d.getUTCFullYear()+'-'
+ pad(d.getUTCMonth()+1)+'-'
+ pad(d.getUTCDate())+'T'
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How to add new column to MYSQL table?
... It's 2015 and people are still trying to set themselves up for sql injection vulnerabilities—:facepalm:
– CommandZ
Jul 8 '15 at 21:34
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Java ByteBuffer to String
...r.
Your approach would be reasonable if you knew the bytes are in the platform's default charset. In your example, this is true because k.getBytes() returns the bytes in the platform's default charset.
More frequently, you'll want to specify the encoding. However, there's a simpler way to do that ...
Why should text files end with a newline?
...e that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
18 A...
How to iterate a loop with index and element in Swift
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Yes. As of Swift 3.0, if you need the index for each element along with its value, you can use the enumerated() method to iterate over the array. It returns a sequence of pairs composed of the index and the value for each item in the array. For example:
for (index, el...