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Adding 'serial' to existing column in Postgres
I have a small table (~30 rows) in my Postgres 9.0 database with an integer ID field (the primary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
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Optional Parameters with C++ Macros
Is there some way of getting optional parameters with C++ Macros? Some sort of overloading would be nice too.
14 Answers
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How to check if an int is a null
I have an object called Person .
8 Answers
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How to track down a “double free or corruption” error
When I run my (C++) program it crashes with this error.
8 Answers
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How to format an inline code in Confluence?
How can I format an inline code in Confluence like this ? I mean, not a separate code block, but just inline classname , for example.
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Given an RGB value, how do I create a tint (or shade)?
Given an RGB value, like 168, 0, 255 , how do I create tints (make it lighter) and shades (make it darker) of the color?
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
In the following method definitions, what does the * and ** do for param2 ?
22 Answers
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How to map atan2() to degrees 0-360
atan2(y, x) has that discontinuity at 180° where it switches to -180°..0° going clockwise.
15 Answers
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Could not locate Gemfile
I'm certainly no Ruby developer but I have an application on my server using Ruby, Gems, and Bundler. I am trying to install another Ruby on under a different user account but on the same VPS. When I go to run
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How to customize the background/border colors of a grouped table view cell?
I would like to customize both the background and the border color of a grouped-style UITableView.
11 Answers
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