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Python string.join(list) on object array rather than string array

...riments says that the list comprehension one can be a good 60% faster on small lists (experiment run 10^6 times on a list of three object()s). However, their performance is similar on big lists (2nd experiment run once on a 10^7 objects() list). – gozzilli Mar ...
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How do I get an object's unqualified (short) class name?

... You can do this with reflection. Specifically, you can use the ReflectionClass::getShortName method, which gets the name of the class without its namespace. First, you need to build a ReflectionClass instance, and then call the getShortName method of that instance:...
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Dynamically adding a form to a Django formset with Ajax

I want to automatically add new forms to a Django formset using Ajax, so that when the user clicks an "add" button it runs JavaScript that adds a new form (which is part of the formset) to the page. ...
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Reset Entity-Framework Migrations

... I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic. ...
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Pretty-print C++ STL containers

... // Don't insert a delimiter if this is the first time the function is called if( _insertDelim ) (*_stream) << _delim; else _insertDelim = true; } (*_stream) << value; return *this; } pretty_ostre...
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“is” operator behaves unexpectedly with integers

...3): The current implementation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you actually just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behaviour of Py...
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iOS 7's blurred overlay effect using CSS?

...s CSS Clip property that's it. I also believe this could be done dynamically for any screen if using canvas to copy the current dom and blurring it. share | improve this answer | ...
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Preloading images with JavaScript

Is the function I wrote below enough to preload images in most, if not all, browsers commonly used today? 14 Answers ...
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Rails layouts per action?

...th this is that you cannot access objects such as current_user to conditionally determine the layout – Andrew K Dec 14 '14 at 5:25 ...
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print call stack in C or C++

Is there any way to dump the call stack in a running process in C or C++ every time a certain function is called? What I have in mind is something like this: ...