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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 is LINQ and what does it do? [closed]
What is LINQ? I know it's for databases, but what does it do?
7 Answers
7
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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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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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Count all occurrences of a string in lots of files with grep
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BombeBombe
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Printing tuple with string formatting in Python
...; print "this is a tuple: %s" % (thetuple,)
this is a tuple: (1, 2, 3)
Making a singleton tuple with the tuple of interest as the only item, i.e. the (thetuple,) part, is the key bit here.
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