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How do I do redo (i.e. “undo undo”) in Vim?
...ers multiple paths through the undo history. This is useful if you accidentally type something after undoing too much.
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Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an
... of events up in another page, the API itself is tremendously helpful, and all of what I'm discussing below is linked directly from this page.
First, .click(function) is literally a shortcut for .bind('click', function), they are equivalent. Use them when binding a handler directly to an element, ...
How do I limit the number of results returned from grep?
...dless of
the presence of trailing context lines. This enables a calling
process to resume a search.
Note: grep stops reading the file once the specified number of matches have been found!
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Android: What's the difference between Activity.runOnUiThread and View.post?
...ivity.
In both cases, if not on UI thread, Handler#post(Runnable) will be called behind the scenes.
As CommonsWare mentioned in the comment, there is a difference between the two - when called on Ui thread, Activity#runOnUiThread will call the run method directly, while View#post will post the runna...
If vs. Switch Speed
Switch statements are typically faster than equivalent if-else-if statements (as e.g. descibed in this article ) due to compiler optimizations.
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Asynctask vs Thread in android
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For long-running or CPU-intensive tasks, there are basically two ways to do this: Java threads, and Android's native AsyncTask.
Neither one is necessarily better than the other, but knowing when to use each call is essential to leveraging the system's performance to your benefit....
What is the difference between old style and new style classes in Python?
...(x) is always <type
'instance'>.
This reflects the fact that all old-style instances, independently of
their class, are implemented with a single built-in type, called
instance.
New-style classes were introduced in Python 2.2 to unify the concepts of class and type.
A new-s...
Abstract classes in Swift Language
... importantly, notice that there is no dynamic dispatch. When logSalary is called on the instance that is stored as a SoftwareEngineer it calls the overridden version of the method. When logSalary is called on the instance after it has been cast to an Employee, it calls the original implementation (i...
How can I decompress a gzip stream with zlib?
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To decompress a gzip format file with zlib, call inflateInit2 with the windowBits parameter as 16+MAX_WBITS, like this:
inflateInit2(&stream, 16+MAX_WBITS);
If you don't do this, zlib will complain about a bad stream format. By default, zlib creates streams with ...
Does using “new” on a struct allocate it on the heap or stack?
...hen you create an instance of a class with the new operator, memory gets allocated on the heap. When you create an instance of a struct with the new operator where does the memory get allocated, on the heap or on the stack ?
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