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Unique BooleanField value in Django?

...mplish this task, what I've done is override the save method for the model and have it check if any other model has the flag already set (and turn it off). class Character(models.Model): name = models.CharField(max_length=255) is_the_chosen_one = models.BooleanField() def save(self, *a...
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How to check if bootstrap modal is open, so i can use jquery validate

i need to make a validation only if a modal is open, because if i open it, and then i close it, and the i press the button that opens the modal it doesn't work because it is making the jquery validation, but not showing because the modal was dismissed. ...
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What is the syntax to insert one list into another list in python?

... x.extend(y) is in place, x+y is returning new list. And x += y, which was not mentioned here, is similar to the extend. – wim Jul 22 '18 at 16:18 ...
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How to redirect cin and cout to files?

How can I redirect cin to in.txt and cout to out.txt ? 5 Answers 5 ...
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Command-line svn for Windows?

Is there a command-line based version of svn for Windows? I know I can get TortoiseSVN, but that just doesn't work for me. ...
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How to get Visual Studio 'Publish' functionality to include files from post build event?

I am currently attempting to use Visual Studio 2010 'Publish' and MSDeploy functionality to handle my web deployment needs but have run into a roadblock with regards to customizing the package depending on my build configuration. ...
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Picking a random element from a set

How do I pick a random element from a set? I'm particularly interested in picking a random element from a HashSet or a LinkedHashSet, in Java. Solutions for other languages are also welcome. ...
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How To Create Table with Identity Column

...'s specific situation, would be to edit the one line in the generated DDL, and not try to write it from scratch using simplest syntax. Also the example you gave does not assign a name to the PK constraint as OP has. Many prefer my constraints named so they have the same name in all environments (dev...
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Setting the correct encoding when piping stdout in Python

...t of a Python program, the Python interpreter gets confused about encoding and sets it to None. This means a program like this: ...
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Can you do greater than comparison on a date in a Rails 3 search?

... also convert everything into the SQL notation Note. where("user_id = ? AND notetype = ? AND date > ?", current_user.id, p[:note_type], p[:date]). order('date ASC, created_at ASC') share | ...