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All Ruby tests raising: undefined method `authenticate' for nil:NilClass

...er! function is part of Rails 3 (using the new devise feature, of which I know little about). If the app can't find the User model (either because of namespace issues or whatever reason) then the method will fail. The "enki" application you linked to is now a Rails 3 application. It could be expe...
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How do I clone a single branch in Git?

...ones support data transfer (push/pull), so that option is even more useful now. See more at "Is git clone --depth 1 (shallow clone) more useful than it makes out?". "Undoing" a shallow clone is detailed at "Convert shallow clone to full clone" (git 1.8.3+) # unshallow the current branch git fetch -...
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SHA512 vs. Blowfish and Bcrypt [closed]

...ccur through an implementation flaw, not cryptanalysis. If you insist on knowing which is "better", SHA-512 has had in-depth reviews by NIST and others. It's good, but flaws have been recognized that, while not exploitable now, have led to the the SHA-3 competition for new hash algorithms. Also, ke...
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Set cookie and get cookie with JavaScript [duplicate]

...ent.cookie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;'; } Now, calling functions setCookie('ppkcookie','testcookie',7); var x = getCookie('ppkcookie'); if (x) { [do something with x] } Source - http://www.quirksmode.org/js/cookies.html They updated the page today so everything...
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How to trigger a build only if changes happen on particular set of files

...s://github.com/jenkinsci/git-plugin/pull/49 Update: The Git plugin (1.16) now has the 'included' region feature. share | improve this answer | follow | ...
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Unicode character in PHP string

... @Gumbo: I know that but it doesn't make any difference in here. Javascript as well as JSON support the \uxxxx Unicode syntax so you can use json_decode to work on an artifically created JSON string representation. I changed the wording ...
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Converting a double to an int in C#

...t.ToInt32 will throw an exception. Cast will return an int, but you won'y know which one (in my implementation it's Int32.MinValue) because you're in unchecked context. (Should you be in checked context, the cast will throw an exception as well in these cases.) – Jeppe Stig Nie...
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html5 - canvas element - Multiple layers

...text.fillStyle = 'yellow'; context.fillRect(0,0,600,250); // Now return the globalCompositeOperation to source-over and draw a // blue rectangle context.globalCompositeOperation = 'source-over'; // Draw a blue rectangle context.fillStyle = 'blue'; context.fil...
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Array extension to remove object by value

...t 2 / Xcode 7 beta 2: As Airspeed Velocity noticed in the comments, it is now actually possible to write a method on a generic type that is more restrictive on the template, so the method could now actually be defined as an extension of Array: extension Array where Element : Equatable { // .....
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What's the difference between tag and release?

...email to support@github.com or this contact form. Update: The GitHub API now allows to manipulate Releases. See the announcement. share | improve this answer | follow ...