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How to check if object (variable) is defined in R?

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MySQL select with CONCAT condition

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Persist javascript variables across pages? [duplicate]

...browsers, and are much easier to use and less fiddly than cookies. http://www.w3.org/TR/2009/WD-webstorage-20091222/ https://www.w3.org/TR/webstorage/. (second edition) Here are some sample code for setting and getting the values using sessionStorage and localStorage : // HTML5 session Storage...
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Java: Path vs File

... Check this article about more info - http://www.oracle.com/technetwork/articles/javase/nio-139333.html Basically file.Path will be the way to go from now on but as is widely known Java people tend to keep back-compatibility so I guess that's why they have left it. ...
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PostgreSQL function for last inserted ID

... name of course. This will be for the current session / connection http://www.postgresql.org/docs/8.3/static/functions-sequence.html
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How can I detect when the mouse leaves the window?

...dow. <html onmouseleave="alert('You left!')"></html> http://www.w3schools.com/jsref/event_onmouseleave.asp share | improve this answer | follow ...
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Are static fields inherited?

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What is the difference between a strongly typed language and a statically typed language?

...IT) and both do some type analysis. A language like Javascript running in .NET vm might be more Typesafe because of the VM. – Adam Gent Apr 24 '10 at 21:06 2 ...
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Can a program depend on a library during compilation but not runtime?

...ere a dependency is needed to compile but not needed at runtime is lombok (www.projectlombok.org). The jar is used to transform java code at compile time but is not needed at all at runtime. Specifying scope "provided" causes the jar to not be included in the war/jar. – Kevin ...
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git discard all changes and pull from upstream

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