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How do I ALTER a PostgreSQL table and make a column unique?
I have a table in PostgreSQL where the schema looks like this:
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PostgreSQL query to return results as a comma separated list
Let say you have a SELECT id from table query (the real case is a complex query) that does return you several results.
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How to check if a value exists in an array in Ruby
I have a value 'Dog' and an array ['Cat', 'Dog', 'Bird'] .
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How to catch SQLServer timeout exceptions
I need to specifically catch SQL server timeout exceptions so that they can be handled differently. I know I could catch the SqlException and then check if the message string Contains "Timeout" but was wondering if there is a better way to do it?
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How do I get the type name of a generic type argument?
If I have a method signature like
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Ignoring time zones altogether in Rails and PostgreSQL
I'm dealing with dates and times in Rails and Postgres and running into this issue:
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What is the Comonad typeclass in Haskell?
What is the Comonad typeclass in Haskell? As in Comonad from Control.Comonad in the comonad package (explanations of any other packages that provide a Comonad typeclass are also welcome). I've vaguely heard about Comonad, but all I really know about it is that is provides extract :: w a -> a ,...
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception?
Why is UnhandledExceptionEventArgs.ExceptionObject an object and not an Exception ?
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Content Security Policy “data” not working for base64 Images in Chrome 28
In this simple example, I'm trying to set a CSP header with the meta http-equiv header. I included a base64 image and I'm trying to make Chrome load the image.
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Google Map API v3 — set bounds and center
I've recently switched to Google Maps API V3. I'm working of a simple example which plots markers from an array, however I do not know how to center and zoom automatically with respect to the markers.
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