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ViewController respondsToSelector: message sent to deallocated instance (CRASH)
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Salting Your Password: Best Practices?
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How do I compute derivative using Numpy?
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'Computing numerical derivatives for more general case is easy' -- I beg to differ, computing numerical derivatives for general cases is quite difficult. You just chose nicely behaved functions.
– High Performance Mark
Mar...
Change navbar color in Twitter Bootstrap
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i love that generate nav site. I wish you had more items I could generate as I'm so terrible at this haha
– caro
Apr 29 '17 at 15:05
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CSS3 Transparency + Gradient
...e these to work in standard css, too, but with the alpha at the end (seems more natural): #0001 would be short hex for “almost transparent black” and #ffcc00ff would be the same as #ffcc00, i.e. “completely opaque tangerine yellow”
– flying sheep
Aug 30...
Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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Why and How to avoid Event Handler memory leaks?
...de is to set the event to null once you're sure that you won't fire it any more. This will implicitly remove all of the subscribers, and can be useful when certain events are only fired during certain stages of the object's lifetime.
– JSBձոգչ
Dec 24 '10 at...
Preview an image before it is uploaded
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When to use NSInteger vs. int
...u know that it wont exceed a certain range, and therefore think it will be more memory-efficient to simply use int.
– Jacob Relkin
Dec 14 '10 at 23:27
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Should a return statement be inside or outside a lock?
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