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Mimicking sets in JavaScript?

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What are some (concrete) use-cases for metaclasses?

...umber() Some other techniques: Ingredients for Building a DSL in Python (pdf). Edit (by Ali): An example of doing this using collections and instances is what I would prefer. The important fact is the instances, which give you more power, and eliminate reason to use metaclasses. Further worth no...
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How to make Twitter Bootstrap menu dropdown on hover rather than click

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How do I profile memory usage in Python?

... 483960 15 2096780 64 tuple 2 174 0 241584 7 2338364 72 dict of module 3 3478 7 222592 7 2560956 78 types.CodeType 4 3296 7 184576 6 2745532 84 function 5 401 1 175112 5 2920644 89 dict of class 6 108 0 81888 3 3...
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CSS triangle custom border color

... transparent; border-right: 45px solid transparent; border-bottom: 72px solid #DB5248; } .triangle:after{ position: relative; content:"!"; top:8px; left:-8px; color:#DB5248; font-size:40px; } .triangle:before{ content:"."; color: #DB5248; position: relat...
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Is it better to call ToList() or ToArray() in LINQ queries?

...4676 ns | 23.954 ns | 1.00 | 0.00 | 0.0229 | - | - | 72 B | | ToList() | 1 | 33.867 ns | 0.7350 ns | 0.6876 ns | 34.013 ns | 1.42 | 0.04 | 0.0331 | - | - | 104 B | | | | | | | ...
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MySQL: @variable vs. variable. What's the difference?

... 72 In MySQL, @variable indicates a user-defined variable. You can define your own. SET @a = 'test...
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What are the differences between a pointer variable and a reference variable in C++?

... 72 Number 2 is not true. A references is not simply "another name for the same variable." References may be passed to functions, stored in c...
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Analyze audio using Fast Fourier Transform

...ber of points in your FFT is 256, your frequency spacing is 44100 / 256 = 172 Hz (approximately) The first coefficient in your array will be the 0 frequency coefficient. That is basically the average power level for all frequencies. The rest of your coefficients will count up from 0 in multiples of...
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Load view from an external xib file in storyboard

... 72 For a while Christopher Swasey's approach was the best approach I had found. I asked a couple o...