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What's an easy way to read random line from a file in Unix command line?
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edited Jul 10 '15 at 16:42
rogerdpack
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tomcat - CATALINA_BASE and CATALINA_HOME variables
...ATALINA_BASE to be equal to the .../tomcat_instance1 or .../tomcat_instance2 directory as appropriate for each instance and the CATALINA_HOME environment variable to the common Tomcat installation whose files will be shared between the two instances.
The CATALINA_BASE environment is optional if you...
How do I get the currently displayed fragment?
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How to merge two arrays in JavaScript and de-duplicate items
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Using a dispatch_once singleton model in Swift
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tl;dr: Use the class constant approach if you are using Swift 1.2 or above and the nested struct approach if you need to support earlier versions.
From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread safet...
Can I load a UIImage from a URL?
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edited Jun 23 '12 at 9:37
Krishnabhadra
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Setting “checked” for a checkbox with jQuery
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convert ArrayList to JSONArray
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http://developer.android.com/reference/org/json/JSONArray.html#JSONArray%28java.util.Collection%29
collection:
http://developer.android.com/reference/java/util/Collection.html
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Why does range(start, end) not include end?
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Because it's more common to call range(0, 10) which returns [0,1,2,3,4,5,6,7,8,9] which contai...
Exposing a port on a live Docker container
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wget http://container_ip:8000
To get the container's IP address, run the 2 commands:
docker ps
docker inspect container_name | grep IPAddress
Internally, Docker shells out to call iptables when you run an image, so maybe some variation on this will work.
To expose the container's port 8000 on you...