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What is a Context Free Grammar?

...y and then the Wikipedia entry on formal grammar, I am left utterly and totally befuddled. Would someone be so kind as to explain what these things are? ...
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AngularJS - wait for multiple resource queries to complete

... You'll want to use promises and $q.all(). Basically, you can use it to wrap all of your $resource or $http calls because they return promises. function doQuery(type) { var d = $q.defer(); var result = Account.query({ type: type }, function() { ...
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?

...st is defined as ArrayList<String> arraylist , is arraylist.removeAll(arraylist) equivalent to arraylist.clear() ? ...
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Thread pooling in C++11

... code, that would violate my job integrity. Edit: to terminate the pool, call the shutdown() method: XXXX::shutdown(){ { unique_lock<mutex> lock(threadpool_mutex); terminate_pool = true;} // use this flag in condition.wait condition.notify_all(); // wake up all threads. // ...
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Deleting Files using Git/GitHub

... @KimPrince - According to kernel.org, "-A --all Like -u, but match <filepattern> against files in the working tree in addition to the index. That means that it will find new files as well as staging modified content and removing files that are no longer in the wo...
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Git : List all unmerged changes in git

...ontent-policy\"\u003e(content policy)\u003c/a\u003e", allowUrls: true }, onDemand: true, discardSelector: ".discard-answer" ,immediatelyShowMarkdownHelp:true,enableSnippets:true }); ...
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL

I'm having a really frustrating issue: Rake is being dumb. 19 Answers 19 ...
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Git push existing repo to a new and different remote repo server?

... the more "official" repo on fedorahosted. What would be the steps to initially copy that over? Within github there is this nice "fork" button, but I can't use this for obvious reasons. ...
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Get all elements but the first from an array

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Why does Double.NaN==Double.NaN return false?

...enormalized value or a signed zero, and an operation that has no mathematically definite result produces NaN. All numeric operations with NaN as an operand produce NaN as a result. As has already been described, NaN is unordered, so a numeric comparison operation involving one or two NaNs returns fa...