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Ruby - test for array
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You probably want to use kind_of().
>> s = "something"
=> "something"
>> s.kind_of?(Array)
=> false
>> s = ["something", "else"]
=> ["something", "else"]
>> s.kind_of?(Array)
=> true
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Eclipse Kepler for OS X Mavericks request Java SE 6
... made a clean installation of OS X Mavericks , and I have downloaded Eclipse Kepler , but if I execute it, gives me this message:
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Shading a kernel density plot between two points.
I frequently use kernel density plots to illustrate distributions. These are easy and fast to create in R like so:
5 Answer...
How can two strings be concatenated?
How can I concatenate (merge, combine) two values?
For example I have:
12 Answers
12
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Run cron job only if it isn't already running
So I'm trying to set up a cron job as a sort of watchdog for a daemon that I've created. If the daemon errors out and fails, I want the cron job to periodically restart it... I'm not sure how possible this is, but I read through a couple of cron tutorials and couldn't find anything that would do wha...
How to list the size of each file and directory and sort by descending size in Bash?
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Simply navigate to directory and run following command:
du -a --max-depth=1 | sort -n
OR add -h for human readable sizes and -r to print bigger directories/files first.
du -a -h --max-depth=1 | sort -hr
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What's the shortest code to cause a stack overflow? [closed]
To commemorate the public launch of Stack Overflow, what's the shortest code to cause a stack overflow? Any language welcome.
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How do I specify the platform for MSBuild?
I am trying to use MSBuild to build a solution with a specified target platform (I need both binaries, x86 and x64). This is how I tried it:
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Getting the IP address of the current machine using Java
I am trying to develop a system where there are different nodes that are run on different system or on different ports on the same system.
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How to send a JSON object using html form data
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Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If thi...