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Create Django model or update if exists

I want to create a model object, like Person, if person's id doesn't not exist, or I will get that person object. 6 Answer...
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jQuery .hasClass() vs .is()

...s there a preferred method of determining whether an element is assigned a class, from a performance standpoint? 4 Answers ...
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how to add records to has_many :through association in rails

How do I add to the Agents model for Customer ? 3 Answers 3 ...
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Conda: Installing / upgrading directly from github

Can I install/upgrade packages from GitHub using conda ? 4 Answers 4 ...
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Using CMake with GNU Make: How can I see the exact commands?

I use CMake with GNU Make and would like to see all commands exactly (for example how the compiler is executed, all the flags etc.). ...
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jQuery: keyPress Backspace won't fire?

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AngularJS : What is a factory?

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Should the .gradle folder be added to version control?

Gradle creates a folder called .gradle . Should I track it with my version control (i.e. git)? 5 Answers ...
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Providing a default value for an Optional in Swift?

The idiom for dealing with optionals in Swift seems excessively verbose, if all you want to do is provide a default value in the case where it's nil: ...
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Android set height and width of Custom view programmatically

I have created a custom view named Graphview . Here is the structure for the GraphView class. 6 Answers ...