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How to check if field is null or empty in MySQL?
I am trying to figure out how to check if a field is NULL or empty . I have this:
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Django Server Error: port is already in use
Restarting the Django server displays the following error:
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How to calculate the SVG Path for an arc (of a circle)
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Expanding on @wdebeaum's great answer, here's a method for generating an arced path:
function polarToCartesian(centerX, centerY, radius, angleInDegrees) {
var angleInRadians = (angleInDegrees-90) * Math.PI / 180.0;
return...
Get host domain from URL?
how to get host domain from a string URL?
9 Answers
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How to render a PDF file in Android
Android does not have PDF support in its libraries. Is there any way to render PDF files in the Android applications?
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How to use Elasticsearch with MongoDB?
I have gone through many blogs and sites about configuring Elasticsearch for MongoDB to index Collections in MongoDB but none of them were straightforward.
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Good examples of Not a Functor/Functor/Applicative/Monad?
While explaining to someone what a type class X is I struggle to find good examples of data structures which are exactly X.
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Using an RDBMS as event sourcing storage
If I were using an RDBMS (e.g. SQL Server) to store event sourcing data, what might the schema look like?
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Declaring a custom android UI element using XML
How do I declare an Android UI element using XML?
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