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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?

... And, of course, you also leave out the brackets, so @som_var.is_a? Hash works too :) – Gus Shortz Mar 3 '13 at 3:51 ...
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How do I set ${user} in Eclipse to get the correct @author tag? [duplicate]

I am using Eclipse and every time code is created, @author is set to the value of ${user}. Unfortunately,${user} seems to contain my windows login id. Is there a way to override this through Eclipse? I couldn't find the option. ...
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How to calculate cumulative normal distribution?

...f(-1.96) 0.024997895148220435 In other words, approximately 95% of the standard normal interval lies within two standard deviations, centered on a standard mean of zero. If you need the inverse CDF: >>> norm.ppf(norm.cdf(1.96)) array(1.9599999999999991) ...
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Limit ggplot2 axes without removing data (outside limits): zoom

...'t figure out how to do horizontal boxplots since that requires coord_flip and you can't have two coords. – jtr13 Oct 5 '18 at 15:28 2 ...
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What's the difference between Invoke() and BeginInvoke()

Just wondering what the difference between BeginInvoke() and Invoke() are? 6 Answers ...
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Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/

I have a stylesheet that loads images from an external domain and I need it to load from https:// from secure order pages and http:// from other pages, based on the current URL. I found that starting the URL with a double slash inherits the current protocol. Do all browsers support this technique?...
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What is Double Brace initialization in Java?

...es an anonymous class derived from the specified class (the outer braces), and provides an initialiser block within that class (the inner braces). e.g. new ArrayList<Integer>() {{ add(1); add(2); }}; Note that an effect of using this double brace initialisation is that you're creating...
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How to manually install an artifact in Maven 2?

...ith Maven 2. I wanted to install a jar from a local directory with the command 6 Answers ...
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What is the syntax for an inner join in LINQ to SQL?

I'm writing a LINQ to SQL statement, and I'm after the standard syntax for a normal inner join with an ON clause in C#. 1...
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How can I prevent the textarea from stretching beyond his parent DIV element? (google-chrome issue o

...x-width: 100px; max-height: 100px; } To limit size to parents width and/or height: textarea { max-width: 100%; max-height: 100%; } share | improve this answer | ...