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Should I use 'has_key()' or 'in' on Python dicts?

I wonder what is better to do: 9 Answers 9 ...
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Getting a list of associative array keys

... Simple jQuery way: This is what I use: DictionaryObj being the JavaScript dictionary object you want to go through. And value, key of course being the names of them in the dictionary. $.each(DictionaryObj, function (key, value) { $("#storeDuplicati...
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How do I install an old version of Django on virtualenv?

...age (in this case Django) inside the virtual environment. But it's exactly what I want to do, and I can't figure it out. 3 ...
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How do I test for an empty JavaScript object?

... including jQuery for such a basic task is not what I would call the right answer. It's true that nowadays jQuery is almost ubiquous, but still we shouldn't forget it is built around a very capable language itself. – Pablo Mescher Fe...
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How can I mark “To Do” comments in Xcode?

... Isn't that what @Dev2rights posted an hour before you? Why don't you accept his answer? – trojanfoe Jun 4 '13 at 11:32 ...
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Multiple inheritance/prototypes in JavaScript

...ng "Multiple inheritance" by "Multiple delegation" to get a better idea of whats going on. The key concept in your implementation its that the proxy is actually choosing the right object to delegate (or forward) the message. The power of your solution is that you can extend the target prototype/s d...
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RuntimeException: Unable to instantiate application

... It occurs even on 5.1.1 . What is going on? – android developer Aug 5 '15 at 18:28  |  show 6...
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How to compare strings ignoring the case

... Wait, what would the difference be between false and nil for an API like this... – Trejkaz Feb 26 '19 at 22:56 ...
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How do I iterate through the alphabet?

In Python, could I simply ++ a char? What is an efficient way of doing this? 2 Answers ...
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How do I serialize a C# anonymous type to a JSON string?

...ta. It's pretty fast in these cases, taking less than a millisecond to do what I need. The DB query itself takes 50x-100x longer, so it's not really a significant bottleneck in my situation. – Brian Oct 15 '12 at 14:00 ...