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USkentaromiura
 

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      1. POWhat good technology podcasts are out there?
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      1. POHidden Features of C#?
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      1. POAvoiding code repetition when using LINQ
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    1. COdoOne and doTwo are not equivalent, why you do this: List<int> A = new List<int>(); for (int i = 0; i < 200; i++) A.Add(i); IList<int> L = A; and not directly this: IList<int> A = new List<int(); for (int i = 0; i < 200; i++) A.Add(i); ????
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      1. POWhy does casting List<T> into IList<T> result in reduced performance?
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    2. CO@Christoph: I mean, you're right. null *should* be a type, what I means is that you cannot check it in that way because: alert(new Object() !== new Object()); /* true, new istance is not the same istance */ alert(Object(null).constructor == {}.constructor); /* true as in spec */ alert(Object(null).prototype == {}.prototype); /* true as in spec */ alert(null instanceof Object); /* obviously false, null means not instantiated */ But basically is a spec bug XD see: http://www.uselesspickles.com/blog/2006/06/12/javascript-null-identity-crisis/ and http://javascript.crockford.com/remedial.html
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    3. CONo, is not. Object() cast work in that way, see http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf -- 15.2.2.1 new Object ( [ value ] ) ... 8. (The argument value was not supplied or its type was Null or Undefined.) Create a new native ECMAScript object. The [[Prototype]] property of the newly constructed object is set to the Object prototype object. The [[Class]] property of the newly constructed object is set to "Object". The newly constructed object has no [[Value]] property. Return the newly created native object.
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