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Difference between Key, Primary Key, Unique Key and Index in MySQL
When should I use KEY , PRIMARY KEY , UNIQUE KEY and INDEX ?
8 Answers
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Automapper - how to map to constructor parameters instead of property setters
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Looks like CreateMap<> should be PersonViewModel and not PersonProfile. As well as in the second code block PersonModel should be PersonViewModel.
– Ben Sampica
Aug 7 '19 at 19:30
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How to add multiple objects to ManyToMany relationship at once in Django ?
...mber of arguments, not a list of them.
add(obj1, obj2, obj3, ...)
To expand that list into arguments, use *
add(*[obj1, obj2, obj3])
Addendum:
Django does not call obj.save() for each item but uses bulk_create(), instead.
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Commonly accepted best practices around code organization in JavaScript [closed]
...JavaScript frameworks like jQuery make client side web applications richer and more functional, I've started to notice one problem...
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How do I load an HTML page in a using JavaScript?
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Even though this is elegant and clean, I suppose it would be better if you actually created the object element through the DOM api.
– David
Jan 21 '15 at 19:13
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How do I implement basic “Long Polling”?
...n find lots of information on how Long Polling works (For example, this , and this ), but no simple examples of how to implement this in code.
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Why can't I use a list as a dict key in python?
...nt's values, for instance when checking (in-)equality. Many would - understandably - expect that you can use any list [1, 2] to get the same key, where you'd have to keep around exactly the same list object. But lookup by value breaks as soon as a list used as key is modified, and for lookup by iden...
Bootstrap: Open Another Modal in Modal
... Items later in the page markup have a naturally higher z-index and will stack on top of items that appeared earlier in the markup. Unless you set an explicit z-index.
– H Dog
May 18 '16 at 20:57
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How to get MVC action to return 404
...being returned (maybe because it has been deleted), I want to return a 404 and display an error page.
12 Answers
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Passing Data between View Controllers
I'm new to iOS and Objective-C and the whole MVC paradigm and I'm stuck with the following:
46 Answers
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