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HTTP redirect: 301 (permanent) vs. 302 (temporary)

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What does the red exclamation point icon in Eclipse mean?

... appear. I copied a directory from one project to another. This directory included a hidden .svn directory (the original project had been committed to version control). When I checked my new project into SVN, the copied directory still contained the old SVN information, incorrectly identifying itse...
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Is it possible to data-bind visible to the negation (“!”) of a boolean ViewModel property?

... You could use my switch/case binding, which includes case.visible and casenot.visible. <tbody data-bind="foreach: periods"> <tr> <td data-bind="switch: true"> <i class="icon-search" data-bind="case.visible: $else, click: $paren...
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There is already an open DataReader associated with this Command which must be closed first

... Taking performance into account you can also resolve this by including System.Data.Entity and then using Include statements to ensure this secondary data is loaded in the original query. If you enable MARS, turning it off to check for these repeated data loads can help speed up your da...
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virtualenv --no-site-packages and pip still finding global packages?

...I know this is a really (really) old post, but I have searched everywhere, including asking some of my own questions on SO, and I cannot figure out how to get --no-site-packages to work. I'm getting close to just wiping ubuntu and seeing if that fixes things. I thought initially that I was having th...
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Get model's fields in Django

...ts two parameters that can be used to control which fields are returned: include_parents True by default. Recursively includes fields defined on parent classes. If set to False, get_fields() will only search for fields declared directly on the current model. Fields from models that directly inher...
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What techniques can be used to define a class in JavaScript, and what are their trade-offs?

...s or WeakMaps. In future releases, classes will most likely be expanded to include these missing features. Support Browser support isn't very good at the moment (supported by nearly everyone except IE), but you can use these features now with a transpiler like Babel. Resources Classes in ECMASc...
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What are important languages to learn to understand different approaches and concepts? [closed]

... Peter Norvig's site: "Learn at least a half dozen programming languages. Include one language that supports class abstractions (like Java or C++), one that supports functional abstraction (like Lisp or ML), one that supports syntactic abstraction (like Lisp), one that supports declarative specific...
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How can I include raw JSON in an object using Jackson?

I am trying to include raw JSON inside a Java object when the object is (de)serialized using Jackson. In order to test this functionality, I wrote the following test: ...
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Save icon: Still a floppy disk? [closed]

...save their work (most likely to the HDD but also possibly any other media, including floppy disks). Sure, the popular File > Save option is there but what about a toolbar button? ...