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When a 'blur' event occurs, how can I find out which element focus went *to*?
...work for focus changes caused by tabbing through fields with the keyboard, and does not work at all in Chrome or Safari. The big problem with using activeElement (except in IE) is that it is not consistently updated until after the blur event has been processed, and may have no valid value at all du...
How to make --no-ri --no-rdoc the default for gem install?
... or RDoc output from the gems I install in my machine or in the servers I handle (I use other means of documentation).
12 A...
How to trigger a build only if changes happen on particular set of files
...ime (1.15). However, someone posted patches on GitHub that work on Jenkins and Hudson that implement the feature you want.
It is a little work to build, but it works as advertised and has been extremely useful since one of my Git trees has multiple independent projects.
https://github.com/jenkinsc...
Why does Java's Arrays.sort method use two different sorting algorithms for different types?
Java 6's Arrays.sort method uses Quicksort for arrays of primitives and merge sort for arrays of objects. I believe that most of time Quicksort is faster than merge sort and costs less memory. My experiments support that, although both algorithms are O(n log(n)). So why are different algorithms us...
How to set child process' environment variable in Makefile
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I have GNU make 3.81, and all: <\n\t>export PROJ_ROOT=$(CURDIR)<\n\t>echo $(PROJ_ROOT)<\n> outputs the correct expansion for the first row, but only echo for the second one. PROJ_ROOT is not set after running make. Spaces around ...
How do I move a file with Ruby?
...u are moving across partitions, "mv" will copy the file to new destination and unlink the source path.
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How do I prevent node.js from crashing? try-catch doesn't work
...:
Note that uncaughtException is a very crude mechanism for exception handling and may be removed in the future
PM2
First of all, I would highly recommend installing PM2 for Node.js. PM2 is really great at handling crash and monitoring Node apps as well as load balancing. PM2 immediately star...
Formatting Phone Numbers in PHP
I am working on an SMS app and need to be able to convert the sender's phone number from +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database .
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How to get Linux console window width in Python
...mns = os.popen('stty size', 'r').read().split()
uses the 'stty size' command which according to a thread on the python mailing list is reasonably universal on linux. It opens the 'stty size' command as a file, 'reads' from it, and uses a simple string split to separate the coordinates.
Unlike the...
How do you work with an array of jQuery Deferreds?
...then the schemas, then finally initialize the application with the schemas and urls for the various data objects. As the user navigates the application, data objects are loaded, validated against the schema, and displayed. As the user CRUDs the data, the schemas provide first-pass validation.
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