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Passport.js - Error: failed to serialize user into session

... didn't implement passport.serializeUser and passport.deserializeUser. Try adding this: passport.serializeUser(function(user, done) { done(null, user); }); passport.deserializeUser(function(user, done) { done(null, user); }); ...
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Change R default library path using .libPaths in Rprofile.site fails to work

I am running R on Windows, not as an administrator. When I install a package, the following command doesn't work: 15 Answer...
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How do I declare an array of weak references in Swift?

...{ weak var value : T? init (value: T) { self.value = value } } Add instances of this class to your array. class Stuff {} var weakly : [Weak<Stuff>] = [Weak(value: Stuff()), Weak(value: Stuff())] When defining Weak you can use either struct or class. Also, to help with reaping a...
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Omitting all xsi and xsd namespaces when serializing an object in .NET?

...GetType()); XmlSerializerNamespaces ns = new XmlSerializerNamespaces(); ns.Add("",""); s.Serialize(xmlWriter, objectToSerialize, ns); share | improve this answer | follow ...
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Swift native base class or NSObject

...Send() for calls to (most of) their methods provide Objective-C runtime metadata for (most of) their method implementations Swift classes that are not subclasses of NSObject: are Objective-C classes, but implement only a handful of methods for NSObject compatibility do not use objc_msgSend() for...
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animating addClass/removeClass with jQuery

... tw16tw16 25.7k77 gold badges5656 silver badges6060 bronze badges 14...
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CSS: how to add white space before element's content?

... HugolpzHugolpz 13.5k2121 gold badges7676 silver badges160160 bronze badges ...
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Absolute positioning ignoring padding of parent

How do you make an absolute positioned element honor the padding of its parent? I want an inner div to stretch across the width of its parent and to be positioned at the bottom of that parent, basically a footer. But the child has to honor the padding of the parent and it's not doing that. The child...
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Simplest way to profile a PHP script

... YakovL 4,8141010 gold badges4242 silver badges6060 bronze badges answered Aug 21 '08 at 21:04 VincentVincent ...
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How do I check if an object has a specific property in JavaScript?

... typeof this[property] or, even worse, x.key will give you completely misleading results. It depends on what you're looking for. If you want to know if an object physically contains a property (and it is not coming from somewhere up on the prototype chain) then object.hasOwnProperty is the way to g...