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What does Provider in JAX-RS mean?

Could anyone explain to me what a JAX-RS Provider is and what ‘@Provider’ annotation does? I have been reading documentation but I cant get it. If there are resource classes that service the incoming requests, what do Providers do? How are they different from singleton resource classes when I ...
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Remove NA values from a vector

I have a huge vector which has a couple of NA values, and I'm trying to find the max value in that vector (the vector is all numbers), but I can't do this because of the NA values. ...
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Rails: Why does find(id) raise an exception in rails? [duplicate]

...ctiveRecord, the default behaviour is to return nil or false for failures, and leave the exception control flow to methods ending in a bang (#save!). – Marten Veldthuis Aug 12 '11 at 8:07 ...
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Embedding JavaScript engine into .NET [closed]

just wondering if anyone has ever tried embedding and actually integrating any js engine into the .net environment. I could find and actually use (after a LOT of pain and effort, since it's pretty outdated and not quite finished) spidermonkey-dotnet project. Anyone with experience in this area? En...
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Using numpy to build an array of all combinations of two arrays

... noted that meshgrid only works for smaller range sets, I have a large one and I get error: ValueError: maximum supported dimension for an ndarray is 32, found 69 – mikkom Oct 20 '19 at 6:54 ...
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Program does not contain a static 'Main' method suitable for an entry point

...ad copied all file from an old project to a new Windows Store App project, and the Build Action was set to Page instead of ApplicationDefinition. I switched back to ApplicationDefinition, but I also had to delete the folder obj\Debug. – Richard H Jan 15 '13 at ...
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Java Multiple Inheritance

In an attempt to fully understand how to solve Java's multiple inheritance problems I have a classic question that I need clarified. ...
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Where Is Machine.Config?

...] should be equal to v1.0.3705, v1.1.4322, v2.0.50727 or v4.0.30319. v3.0 and v3.5 just contain additional assemblies to v2.0.50727 so there should be no config\machine.config. v4.5.x and v4.6.x are stored inside v4.0.30319. ...
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How to move an iFrame in the DOM without losing its state?

...s related to the bounty by @djechlin A lot of search on the w3/dom specs and didn't find anything final that specifically says that iframe should be reloaded while moving in the DOM tree, however I did find lots of references and comments in the webkit's trac/bugzilla/microsoft regarding different...
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?

I came across the sun.misc.Unsafe package the other day and was amazed at what it could do. 16 Answers ...