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Why do people say that Ruby is slow? [closed]

I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. ...
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What's the best way to parse command line arguments? [closed]

... will accept -q or --query as options, store the argument in an attribute called query and has a default value if you don't specify it. It is also self-documenting in that you declare the help argument (which will be used when run with -h/--help) right there with the option. Usually you parse your...
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How to have git log show filenames like svn log -v

...ncouraged to use git-log[1] instead. The whatchanged command is essentially the same as git-log[1] but defaults to show the raw format diff output and to skip merges. The command is kept primarily for historical reasons; fingers of many people who learned Git long before git log was i...
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Handling a colon in an element ID in a CSS selector [duplicate]

...mpatibility mode. This other answer to this same question did work. basically \3A instead of \:. – Merlyn Morgan-Graham Mar 30 '12 at 2:32 ...
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How to create a self-signed certificate with OpenSSL

... For anyone else using this in automation, here's all of the common parameters for the subject: -subj "/C=US/ST=Oregon/L=Portland/O=Company Name/OU=Org/CN=www.example.com" – Alex S Jun 5 '15 at 18:13 ...
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How do I pass a method as a parameter in Python

...thodToRun() return result obj.method2(obj.method1) Note: I believe a __call__() method does exist, i.e. you could technically do methodToRun.__call__(), but you probably should never do so explicitly. __call__() is meant to be implemented, not to be invoked from your own code. If you wanted me...
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read complete file without using loop in java

... If the file is small, you can read the whole data once: File file = new File("a.txt"); FileInputStream fis = new FileInputStream(file); byte[] data = new byte[(int) file.length()]; fis.read(data); fis.close(); String str = new String(data, ...
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is_null($x) vs $x === null in PHP [duplicate]

...someone strongly suggested that I use is_null() instead as it is specifically designed for the null-evaluation purpose. He also started talking about math or something. ...
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How can I make the cursor turn to the wait cursor?

... it takes a little while to do. How can I display the Wait/Busy Cursor (usually the hourglass) to the user to let them know the program is doing something? ...
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How does lucene index documents?

...links . But i heard that Lucene project has a special stemmer named "Snowball"? Do you heard anything about that ? – M.Amrollahi Apr 9 '10 at 17:44 ...