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How do I check for null values in JavaScript?
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19 Answers
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Using Predicate in Swift
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158
This is really just a syntax switch. OK, so we have this method call:
[NSPredicate predicateW...
How can I ignore a property when serializing using the DataContractSerializer?
I am using .NET 3.5SP1 and DataContractSerializer to serialize a class. In SP1, they changed the behavior so that you don't have to include DataContract / DataMember attributes on the class and it will just serialize the entire thing. This is the behavior I am using, but now I need to ignore o...
What is the difference between ELF files and bin files?
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answered Mar 11 '10 at 17:30
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Fast check for NaN in NumPy
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162
Ray's solution is good. However, on my machine it is about 2.5x faster to use numpy.sum in pla...
Android - drawable with rounded corners at the top only
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316
Try giving these values:
<corners android:topLeftRadius="6dp" android:topRightRadius="6dp"...
How to set a Django model field's default value to a function call / callable (e.g., a date relative
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143
The question is misguided. When creating a model field in Django, you are not defining a func...
On design patterns: When should I use the singleton?
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19 Answers
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Which is more efficient, a for-each loop, or an iterator?
...All iterators have as a fundamental requirement that next() should be an O(1) operation, making the loop O(n).
To verify that the iterator is used underwater by the new for loop syntax, compare the generated bytecodes from the following two Java snippets. First the for loop:
List<Integer> a...
Why sizeof int is wrong, while sizeof(int) is right?
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101
The following could be ambiguous:
sizeof int * + 1
Is that (sizeof (int*)) + 1, or (sizeof(...