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Boolean.hashCode()
The hashCode() method of class Boolean is implemented like this:
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How do I use vi keys in ipython under *nix?
Currently in Bash I use set -o vi to enable vi mode in my bash prompt.
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Scrolling down both parts of a split-window at the same time in Vim
Is it possible to scroll down the left and right parts of a vertically split window in Vim? I have two files I would like to compare roughly. Each line of these files looks almost the same.
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Postgres: How to do Composite keys?
I cannot understand the syntax error in creating a composite key. It may be a logic error, because I have tested many varieties.
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What is the second parameter of NSLocalizedString()?
What is the *comment parameter in:
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How to create a new file together with missing parent directories?
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Unpivot with column name
I have a table StudentMarks with columns Name, Maths, Science, English .
Data is like
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Getting the count of unique values in a column in bash
I have tab delimited files with several columns. I want to count the frequency of occurrence of the different values in a column for all the files in a folder and sort them in decreasing order of count (highest count first). How would I accomplish this in a Linux command line environment?
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Eclipse: Can you format code on save?
In Eclipse, under Windows -> Preference -> Java -> Code Style , you can define code templates for comments and code, and you can setup a code formatter.
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How to check if an array field contains a unique value or another array in MongoDB?
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