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What's the difference between django OneToOneField and ForeignKey?

...Publisher: Apress Publishing> >>> b.publisher.website u'http://www.apress.com/' With ForeignKey fields queries work the other way too, but they're slightly different due to the non-symmetrical nature of the relationship. >>> p = Publisher.objects.get(name='Apress Publishing'...
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jQuery: Count number of list elements?

... num = $("#mylist").find("li").length; console.log(num); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <ul id="mylist"> <li>Element 1</li> <li>Element 2</li> <li>Element 3</li> <li>E...
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Rails Root directory path?

...ils def self.root File.expand_path("..", __dir__) end end source: https://github.com/rails/rails/blob/5259062868dcf10fbcf735d6520e6a14e15fdcdb/actionmailer/test/abstract_unit.rb#L12 share | ...
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Listing all permutations of a string/integer

...> a + perm(...), b + perm(....) .... I found the pseudocode on http://www.programmersheaven.com/mb/Algorithms/369713/369713/permutation-algorithm-help/: makePermutations(permutation) { if (length permutation < required length) { for (i = min digit to max digit) { if (i not in per...
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What is the difference between `new Object()` and object literal notation?

...l notation prevents us from falling foul of this buffoonery. (From http://www.jameswiseman.com/blog/2011/01/19/jslint-messages-use-the-object-literal-notation/) share | improve this answer ...
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Upload files with HTTPWebrequest (multipart/form-data)

...me post params do the following: RequestHelper.PostMultipart( "http://www.myserver.com/upload.php", new Dictionary<string, object>() { { "testparam", "my value" }, { "file", new FormFile() { Name = "image.jpg", ContentType = "image/jpeg", FilePath = "c:\\temp\\mynicei...
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Do browsers parse javascript on every page load?

...ing the preparsed version of the code. InfoQ has a good writeup @ http://www.infoq.com/articles/google-dart share | improve this answer | follow | ...
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What does the caret (^) character mean?

...it introductory docs online also introduce revision and range specifiers: https://git-scm.com/book/en/v2/Git-Tools-Revision-Selection share | improve this answer | follow ...
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Was PreferenceFragment intentionally excluded from the compatibility package?

...er here: PreferenceActivity Android 4.0 and earlier or on my blog: http://www.blackmoonit.com/2012/07/all_api_prefsactivity/ Tested on two tablets running 4.0.3 and 4.0.4 as well as a phone running 4.0.4 and 2.3.3 and also an emulator running 1.6. ...
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Are there any disadvantages to always using nvarchar(MAX)?

... I checked some articles and find useful test script from this: http://www.sqlservercentral.com/Forums/Topic1480639-1292-1.aspx Then changed it to compare between NVARCHAR(10) vs NVARCHAR(4000) vs NVARCHAR(MAX) and I don't find speed difference when using specified numbers but when using MAX. Yo...