大约有 1,970 项符合查询结果（耗时：0.0371秒） [XML]
Django migration strategy for renaming a model and relationship fields
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In django 2.0 if you change your model name, the ./manage.py makemigrations myapp command will ask you if you renamed your model. E.g.: Did you rename the myapp.Foo model to Bar? [y/N] If you answer 'y' your migration will contain the...
What's the difference between django OneToOneField and ForeignKey?
...ship according to official django documentation: docs.djangoproject.com/en/2.0/ref/models/fields/…
– Kutay Demireren
Jan 7 '18 at 14:36
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Does Swift have documentation generation support?
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Very nice description of Swift 2.0 documentation syntax. You should update the post to include the /// - todo: keyword
– Leonardo
Aug 17 '15 at 13:21
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When is a function too long? [closed]
...source file and put it in one line. I mean then you really get to be a Web 2.0 "ninja" :)
– BobbyShaftoe
Jan 24 '09 at 8:58
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django: BooleanField, how to set the default value to true?
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initial is from older Django. docs.djangoproject.com/en/2.0/ref/models/fields/#booleanfield
– Sharpless512
Mar 10 '18 at 13:19
add a comment
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Pointer to class data member “::*”
...ruct Sample {
double x;
}
std::vector<Sample> samples { {1.0}, {2.0}, {3.0} };
double m = mean(samples.begin(), samples.end(), &Sample::x);
EDIT - The above code has performance implications
You should note, as I soon discovered, that the code above has some serious performance imp...
Microsoft CDN for jQuery or Google CDN? [closed]
...all UpdatePanels)
jQuery.Validate.min.js
Our server:
Combined.js?v=2.2.0.6190 (Major.Minor.Iteration.Changeset)
Since part of our build process is combining and minifying all custom javascript, we do this via a custom script manager that includes the release or debug (non-minified) versions ...
in iPhone App How to detect the screen resolution of the device
...Displays this will return a 1.0f, while Retina Display devices will give a 2.0f and the iPhone 6 Plus (Retina HD) will give a 3.0f.
Now if you want to get the pixel width & height of the iOS device screen you just need to do one simple thing.
CGSize screenSize = CGSizeMake(screenBounds.size.wi...
How to write a scalable Tcp/Ip based server
... try
{
//warning, only call this once, this is a bug in .net 2.0 that breaks if
// you're running multiple asynch accepts, this bug may be fixed, but
// it was a major pain in the ass previously, so make sure there is only one
//BeginAccept running
_serverS...
The order of elements in Dictionary
...> kvp in _Dictionary.OrderBy(k => k.Value)) {
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}
In framework 2.0 you would first have to put the items in a list in order to sort them:
List<KeyValuePair<string, string>> items = new List<KeyValuePair<string, string>>(_Dictionary);
items.Sort(delegate(KeyValueP...