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Visually managing MongoDB documents and collections [closed]
... have to keep searching for documents, copy-and-pasting OIDs, etc., especially from a command prompt window (ever tried to "mark" text that wraps multiple lines?)
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Creating an array of objects in Java
...is:
A a1;
A a2;
A a3;
A a4;
Now you couldn't do a1.someMethod() without allocating a1 like this:
a1 = new A();
Similarly, with the array you need to do this:
a[0] = new A();
...before using it.
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What is this operator in MySQL?
...r, in the following form:
IS [NOT] DISTINCT FROM
The following is universally supported, but is relative complex:
CASE WHEN (a = b) or (a IS NULL AND b IS NULL)
THEN 1
ELSE 0
END = 1
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C++ “virtual” keyword for functions in derived classes. Is it necessary?
...them other than that the first approach requires more typing and is potentially clearer.
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ASP.NET MVC Ajax Error handling
How do I handle exceptions thrown in a controller when jquery ajax calls an action?
6 Answers
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Rank items in an array using Python/NumPy, without sorting array twice
... I did some testing with timeit, and this method is slightly slower for small arrays. On my machine they're equal when the array has 2,000 elements. At 20,000 elements, your method is about 25% faster.
– joshayers
Mar 12 '11 at 20:33
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Use 'class' or 'typename' for template parameters? [duplicate]
...about this here. I thought it was interesting.
Summary: Stroustrup originally used class to specify types in templates to avoid introducing a new keyword. Some in the committee worried that this overloading of the keyword led to confusion. Later, the committee introduced a new keyword typename to ...
MySQL select one column DISTINCT, with corresponding other columns
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The DISTINCT keyword doesn't really work the way you're expecting it to. When you use SELECT DISTINCT col1, col2, col3 you are in fact selecting all unique {col1, col2, col3} tuples.
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How to resize an image to fit in the browser window?
This seems trivial but after all the research and coding I can't get it to work. Conditions are:
14 Answers
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Is “else if” faster than “switch() case”? [duplicate]
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For just a few items, the difference is small. If you have many items you should definitely use a switch.
If a switch contains more than five items, it's implemented using a lookup table or a hash list. This means that all items get the same access time, compared to...