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What is ActiveMQ used for - can we apply messaging concept using a Database?
...eliably communicate between two distributed processes.
Yes, you could store messages in a Database to communicate between two processes, but, as soon as the message is received you'd have to DELETE the message, That means a row INSERT and DELETE for each message.
When you try to scale that up com...
Does JavaScript have a built in stringbuilder class?
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If you have to write code for Internet Explorer make sure you chose an implementation, which uses array joins. Concatenating strings with the + or += operator are extremely slow on IE. This is especially true for IE6. On modern browsers += is usually ...
CSS: How to position two elements on top of each other, without specifying a height?
...ed to position exactly on top of each other. However, when I do that, the formatting gets all screwed up because the containing DIV acts like there is no height. I think this is the expected behavior with position:absolute but I need to find a way to position these two elements on top of each othe...
$location / switching between html5 and hashbang mode / link rewriting
...sion that Angular would rewrite URLs that appear in href attributes of anchor tags within tempaltes, such that they would work whether in html5 mode or hashbang mode. The documentation for the location service seems to say that HTML Link Rewriting takes care of the hashbang situation. I would thu...
Creating an empty Pandas DataFrame, then filling it?
I'm starting from the pandas DataFrame docs here: http://pandas.pydata.org/pandas-docs/stable/dsintro.html
5 Answers
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Test if lists share any items in python
...suspect there might be a library function to do this. If not, is there a more pythonic method of achieving the same result.
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Can you change what a symlink points to after it is created?
...st -> .profile
EDIT: As the OP pointed out in a comment, using the --force option will make ln perform a system call to unlink() before symlink(). Below, the output of strace on my linux box proving it:
$ strace -o /tmp/output.txt ln -s -f .bash_aliases test
$ grep -C3 ^unlink /tmp/output.txt ...
Search stops working for “Entire Solution”
Somehow Visual Studio search has stopped working for me. Anytime I search "Entire Solution" for some text I get this result:
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Jquery - How to make $.post() use contentType=application/json?
...sing $.post() in jquery that the default contentType is application/x-www-form-urlencoded - when my asp.net mvc code needs to have contentType=application/json
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Apply function to all elements of collection through LINQ [duplicate]
...ction - any function - to all the elements of a collection, without using foreach. Something like python lambda functions.
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