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What's the difference between Ruby's dup and clone methods?

...48 (Rails cookie handling) then you can easily get an error when they unbeknownst to you they clone it and then attempt to modify the clone. duping your frozen value and passing that in allows you to at least guarantee that no one accidentally modifies your constant, without breaking Rack here. ...
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apc vs eaccelerator vs xcache

... Success. It's 3 years old now. Ewwww. – Swader Nov 30 '13 at 13:19 3 ...
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CKEditor instance already exists

...laying but the other two where, I added the above code and all teh editors now appear – Craig Angus Apr 29 '10 at 15:56 18 ...
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How to check whether an object is a date?

... Out of interest do you know the reason for this failing when passing across frame boundaries? – Simon Lieschke Apr 12 '10 at 6:03 ...
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Compiling problems: cannot find crt1.o

...idn't have it installed in the first place, thus you need to reinstall it, now that you reverted back to gcc. You can do so like this on Debian: aptitude show libc-dev Ubuntu: apt-get install libc-dev On Ubuntu, if you don't have libc-dev, since I cannot find it on packages.ubuntu.com, you ca...
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NSUserDefaults not cleared after app uninstall on simulator

...m from a physical device running iOS8. A quick and annoying solution for now is to click, iOS Simulator -> Reset Content and Settings. Xcode 9.2 with Simulator 10 still presents this issue. Menu option is now Hardware .. Erase All Content and Settings I submitted a bug report btw ...
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Converting string to Date and DateTime

... @Matthew yes, correct. But you never now, even today I found a PHP4.1 version still installed ... – Roland Nov 26 '18 at 16:45 ...
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Would you, at present date, use JBoss or Glassfish (or another) as Java EE server for a new project?

... licensing fees, solid reputation and support, etc. That is where I start nowadays. Most applications/systems choose lots of fancy J2EE features when all they really need is servlets and JDBC with some decent architecture/design. Question why you think you need more. Of the full-blown containers...
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How can I iterate over files in a given directory?

... If you're seeing this in 2017 or beyond, os.scandir(dir_str) is now available and much cleaner to use. No need for fsencode. for entry in os.scandir(path): print(entry.path) – g.o.a.t. Dec 21 '17 at 0:49 ...
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Insert new item in array on any position in PHP

...( $original, 3, 0, $inserted ); // splice in at position 3 // $original is now a b c x d e If replacement is just one element it is not necessary to put array() around it, unless the element is an array itself, an object or NULL. ...