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How to diff a commit with its parent?
...sion ranges, where it needs to work also for merge commits, with more than one parent. Then r1^! is "r1 --not r1^@" i.e. "r1 ^r1^1 ^r1^2 ..."
Also, you can use git show COMMIT to get commit description and diff for a commit. If you want only diff, you can use git diff-tree -p COMMIT
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PHP Sort a multidimensional array by element containing date
...e result will be 0 if both dates are equal, a positive number if the first one ($a) is larger or a negative value if the second argument ($b) is larger. usort() uses this information to sort the array.
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How to get object length [duplicate]
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Can be done easily with $.map():
var len = $.map(a, function(n, i) { return i; }).length;
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Proper use of the IDisposable interface
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The point of Dispose is to free unmanaged resources. It needs to be done at some point, otherwise they will never be cleaned up. The garbage collector doesn't know how to call DeleteHandle() on a variable of type IntPtr, it doesn't know whether or not it needs to call DeleteHandle().
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HashMap get/put complexity
...choose to believe that if I hadn't had to type this on a flipping mobile phone touchscreen, I could have beaten Jon Sheet to the punch. There's a badge for that, right?
– Tom Anderson
Dec 29 '10 at 11:55
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How can I get the active screen dimensions?
...ers.VirtualScreenHeight
to get the combined size of all monitors and not one in particular.
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Calendar date to yyyy-MM-dd format in java
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Anyway to remove timezone completely from from this calender object?
– Sarika.S
Sep 25 '12 at 5:24
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How to do a non-greedy match in grep?
.... to match newlines is called DOTALL or single-line mode; Ruby is the only one that calls it multiline. In the other flavors, multiline is the mode that allows the anchors (^ and $) to match at line boundaries. Ruby has no equivalent mode because in Ruby they always work that way.
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Behaviour of increment and decrement operators in Python
... +, count (two unary + operators) just as easily as it could be ++, count (one unary ++ operator). It's not a significant syntactic ambiguity, but it does exist.
Simpler language. ++ is nothing more than a synonym for += 1. It was a shorthand invented because C compilers were stupid and didn't know ...
What's the best way to share data between activities?
I have one activity which is the main activity used throughout the app and it has a number of variables. I have two other activities which I would like to be able to use the data from the first activity.
Now I know I can do something like this:
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