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Regular expression for letters, numbers and - _
I'm having trouble checking in PHP if a value is is any of the following combinations
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Difference between fold and reduce?
Trying to learn F# but got confused when trying to distinguish between fold and reduce . Fold seems to do the same thing but takes an extra parameter. Is there a legitimate reason for these two functions to exist or they are there to accommodate people with different backgrounds? (E.g.: String ...
How to clear variables in ipython?
Sometimes I rerun a script within the same ipython session and I get bad surprises when variables haven't been cleared. How do I clear all variables?
And is it possible to force this somehow every time I invoke the magic command %run?
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How to get MD5 sum of a string using python?
In the Flickr API docs , you need to find the MD5 sum of a string to generate the [api_sig] value.
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Server polling with AngularJS
I'm trying to learn AngularJS. My first attempt to get new data every second worked:
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How can I access “static” class variables within class methods in Python?
If I have the following python code:
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Difference between JVM and HotSpot?
What exactly is HotSpot and how does it relate to JVM and OpenJDK? Is it a library? What exactly does it do?
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Differences between Intent and PendingIntent
I read through some articles and both seem to do the same thing and I was wondering what is the difference between starting the service like that:
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Relatively position an element without it taking up space in document flow
How can I relatively position an element, and have it not take up space in the document flow?
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how to mysqldump remote db from local machine
...es not have mysqldump installed. I would like to use the mysqldump on my machine to connect to the remote database and do the dump on my machine.
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