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Abandoning changes without deleting from history

... branch if you use the -c option to hg heads, but it won't show up by default and hg merge will know not try to merge with the closed head. You will need to use hg push --force the first time you push this closed head to another repository since you are actually create additional heads in the remot...
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Is there a difference between “==” and “is”?

...reference implementation works, you'll get unexpected and inconsistent results if you mistakenly use is to compare for reference equality on integers: >>> a = 500 >>> b = 500 >>> a == b True >>> a is b False That's pretty much what we expected: a and b have the...
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Repeat a task with a time delay?

...o update UI controls. private int mInterval = 5000; // 5 seconds by default, can be changed later private Handler mHandler; @Override protected void onCreate(Bundle bundle) { // your code here mHandler = new Handler(); startRepeatingTask(); } @Override public void onDestroy() { ...
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Initialize a byte array to a certain value, other than the default null? [duplicate]

...way to do it: var sevenThousandItems = new byte[7000]; for (int i = 0; i < sevenThousandItems.Length; i++) { sevenThousandItems[i] = 0x20; } Of course, if you need to do this a lot then you could create a helper method to help keep your code concise: byte[] sevenItems = CreateSpecialByteA...
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How to sort objects by multiple keys in Python?

Or, practically, how can I sort a list of dictionaries by multiple keys? 8 Answers 8 ...
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Issue with adding common code as git submodule: “already exists in the index”

...lder git rm -r projectfolder and then add submodule git submodule add <git_submodule_repository> projectfolder share | improve this answer | follow ...
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How do I interpret precision and scale of a number in a database?

...oft.com/en-us/library/ms187746.aspx The scale cannot be less than zero. 0 <= scale <= precision. Essentially a negative scale value would be meaningless. – mezoid Jun 19 '14 at 23:15 ...
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Default value to a parameter while passing by reference in C++

Is it possible to give a default value to a parameter of a function while we are passing the parameter by reference. in C++ ...
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Git on Windows: How do you set up a mergetool?

...e merge tool (I tested this in msys Git from Powershell) note that by default Perforce will add its installation dir to PATH, thus no need to specify full path to p4merge in the command Download: http://www.perforce.com/product/components/perforce-visual-merge-and-diff-tools EDIT (Feb 2014) As...
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Checking to see if a DateTime variable has had a value assigned

... assigned by trying to read from it :) I suspect you really want Nullable<DateTime> (or DateTime? with the C# syntactic sugar) - make it null to start with and then assign a normal DateTime value (which will be converted appropriately). Then you can just compare with null (or use the HasValue...