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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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How do I send an HTML email?
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Dave Jarvis
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answered Feb 21 '11 at 17:06
BalusCBalusC
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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:
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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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Which HTML Parser is the best? [closed]
...st released a new Java HTML parser: jsoup. I mention it here because I think it will do what you are after.
Its party trick is a CSS selector syntax to find elements, e.g.:
String html = "<html><head><title>First parse</title></head>"
+ "<body><p>Parsed ...
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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How to rename a file using Python
I want to change a.txt to b.kml .
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