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Display Animated GIF
...ndroid.graphics.Movie class.
This is not too much documented, but is in SDK Reference. Moreover, it is used in Samples in ApiDemos in BitmapDecode example with some animated flag.
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How do I determine if a port is open on a Windows server? [closed]
... that you're trying to use:
On the server itself, use netstat -an to check to see which ports are listening.
From outside, just use telnet host port (or telnet host:port on Unix systems) to see if the connection is refused, accepted, or timeouts.
On that latter test, then in general:
connectio...
What does “while True” mean in Python?
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while True means loop forever. The while statement takes an expression and executes the loop body while the expression evaluates to (boolean) "true". True always evaluates to boolean "true" and thus executes the loop body indefinitely. It's an idiom that you'll just get used to...
Create a date from day month and year with T-SQL
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Cade RouxCade Roux
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How do 20 questions AI algorithms work?
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You can think of it as the Binary Search Algorithm.
In each iteration, we ask a question, which should eliminate roughly half of the possible word choices. If there are total of N words, then we can expect to get an answer after log2(N) ...
What's wrong with using == to compare floats in Java?
...- currentSectionID) < epsilon)
where epsilon is a very small number like 0.00000001, depending on the desired precision.
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Finding out whether a string is numeric or not
How can we check if a string is made up of numbers only. I am taking out a substring from a string and want to check if it is a numeric substring or not.
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Static and Sealed class differences
... Hossein Narimani RadHossein Narimani Rad
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Plot correlation matrix into a graph
...x with some correlation values. Now I want to plot that in a graph that looks more or less like that:
11 Answers
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Find all records which have a count of an association greater than zero
... projects that have an associated vacancy.
UPDATE:
As pointed out by @mackskatz in the comment, without a group clause, the code above will return duplicate projects for projects with more than one vacancies. To remove the duplicates, use
Project.joins(:vacancies).group('projects.id')
UPDATE:
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