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Fastest way to count exact number of rows in a very large table?
I have come across articles that state that SELECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns.
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How to catch an Exception from a thread
I have Java main class, in the class, I start a new thread, in the main, it waits until the thread dies. At some moment, I throw a runtime exception from the thread, but I can't catch the exception thrown from the thread in the main class.
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Converting 'ArrayList to 'String[]' in Java
How might I convert an ArrayList<String> object to a String[] array in Java?
16 Answers
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Emacs bulk indent for Python
Working with Python in Emacs if I want to add a try/except to a block of code, I often find that I am having to indent the whole block, line by line. In Emacs, how do you indent the whole block at once.
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When NOT to call super() method when overriding?
When I make my own Android custom class, I extend its native class. Then when I want to override the base method, I always call super() method, just like I always do in onCreate , onStop , etc.
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How do I convert an integer to string as part of a PostgreSQL query?
How do I convert an integer to string as part of a PostgreSQL query?
3 Answers
3
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DateTimePicker: pick both date and time
Is it possible to use DateTimePicker (Winforms) to pick both date and time (in the dropdown)? How do you change the custom display of the picked value? Also, is it possible to enable the user to type the date/time manually?
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Showing empty view when ListView is empty
For some reason the empty view, a TextView in this case, always appears even when the ListView is not empty. I thought the ListView would automatically detect when to show the empty view.
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Xml Namespace breaking my xpath! [duplicate]
I have the following XML:
5 Answers
5
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How to make IntelliJ IDEA insert a new line at every end of file?
How do I make IntelliJ IDEA insert a new line at every end of file,
so that GitHub doesn't complain for example?
8 Answers...