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Uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
...s with RubyGems 1.6.0+ and Rails < 2.3.11:
gem update --system 1.5.3
If you had previously downgraded to an even earlier version and want to update to 1.5.3, you might get the following when trying to run that:
Updating RubyGems
ERROR: While executing gem ... (RuntimeError)
No gem names ...
Why am I seeing an “origin is not allowed by Access-Control-Allow-Origin” error here? [duplicate]
...cript cannot contact a remote server and send sensitive data.
jsonp is a different way to use javascript. You make a request and results are encapsulated into a callback function which is run in the client. It's the same as linking a new script tag into the head part of your html (you know that you...
onTouchListener warning: onTouch should call View#performClick when a click is detected
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@longilong Well if you wish you can also set it to use switch-case, but that's logically the same...
– android developer
Sep 5 '14 at 14:27
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How can I combine two commits into one commit? [duplicate]
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You want to git rebase -i to perform an interactive rebase.
If you're currently on your "commit 1", and the commit you want to merge, "commit 2", is the previous commit, you can run git rebase -i HEAD~2, which will spawn an editor listing all the commits the rebase will traverse. You ...
Most concise way to convert a Set to a List
... null, and the only weird I notice is that the index starts at 1. However, if I just create a normal list the index starts at 0. Weird?
– Jack
Feb 19 '16 at 15:04
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Is there a difference between /\s/g and /\s+/g?
...+.
However, just like how 0 multiplied by anything else is 0, it seems as if both methods strip spaces in exactly the same way.
If you change the replacement string to '#', the difference becomes much clearer:
var str = ' A B C D EF ';
console.log(str.replace(/\s/g, '#')); // ##A#B##C###D#EF...
What is “stdafx.h” used for in Visual Studio?
...lick: although every CPP file can potentially and legally give a sligthly different meaning to the chain of header files included on top of each Cpp file (by things like having different macros #define'd in advance of the includes, or by including the headers in different order), that is most often ...
When to use valueChangeListener or f:ajax listener?
What's the difference between the following two pieces of code - with regards to listener placement?
2 Answers
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Why does a return in `finally` override `try`?
...esn't always execute in all cases due to a pretty serious browser bug. Specifically – if an exception is thrown in a try-finally block that isn't surrounded by a higher level try-catch, then the finally block won't execute. Here's a test case jsfiddle.net/niallsmart/aFjKq. This issue was fixed in ...
How do I get the name of a Ruby class?
... (You need to load the ActiveSupport string inflections to be able to use if, if you are not a Rails project.)
– Per Lundberg
Jul 12 '16 at 8:24
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