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When is JavaScript's eval() not evil?

...see my specific remarks below). Code injection - eval() potentially runs a string of code under elevated privileges. For example, a program running as administrator/root would never want to eval() user input, because that input could potentially be "rm -rf /etc/important-file" or worse. Again, JavaS...
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Multiple columns index when using the declarative ORM extension of sqlalchemy

...me__ = 'table_A' id = Column(Integer, primary_key=True) a = Column(String(32), index=True) b = Column(String(32), index=True) if you'd like a composite index, again Table is present here as usual you just don't have to declare it, everything works the same (make sure you're on recent 0...
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Inconsistent accessibility: property type is less accessible

...lass name namespace Test { public class Delivery { private string name; private string address; private DateTime arrivalTime; public string Name { get { return name; } set { name = value; } } public string Addr...
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Safe (bounds-checked) array lookup in Swift, through optional bindings?

...sign choice made by the Swift developers. Take your example: var fruits: [String] = ["Apple", "Banana", "Coconut"] var str: String = "I ate a \( fruits[0] )" If you already know the index exists, as you do in most cases where you use an array, this code is great. However, if accessing a subscript...
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How can you check for a #hash in a URL using JavaScript?

...window's URL, you can't do this for an arbitrary URL (e.g. one stored in a string variable) – Gareth Nov 18 '08 at 11:39 64 ...
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How does inheritance work for Attributes?

...ue)] [AttributeUsage (Inherited = True)] MyUberAttribute : Attribute { string _SpecialName; public string SpecialName { get { return _SpecialName; } set { _SpecialName = value; } } } Then use the Attribute by decorating a super-class... [MyUberAttribute(SpecialName = "Bob"...
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“ArrayAdapter requires the resource ID to be a TextView” xml problems

... ArrayAdapter expects. When you use this constructor: new ArrayAdapter<String>(this, R.layout.a_layout_file, this.file) R.Layout.a_layout_file must be the id of a xml layout file containing only a TextView(the TextView can't be wrapped by another layout, like a LinearLayout, RelativeLayout ...
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Changing default encoding of Python?

...ow. In python 2 which was not as strongly typed regarding the encoding of strings you could perform operations on differently encoded strings, and succeed. E.g. the following would return True. u'Toshio' == 'Toshio' That would hold for every (normal, unprefixed) string that was encoded in sys.ge...
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Separate Back Stack for each tab in Android using Fragments

... everywhere in project public class AppConstants{ public static final String TAB_A = "tab_a_identifier"; public static final String TAB_B = "tab_b_identifier"; //Your other constants, if you have them.. } nothing to explain here.. 3. Ok, Main Tab Activity- Please go through commen...
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Making interface implementations async

... await Task.Delay(1000); } } class Program { static void Main(string[] args) { IIOAsync asAsync = new ClsAsync(); IIO asSync = asAsync; Console.WriteLine(DateTime.Now.Second); asAsync.DoOperation(); Console.WriteLine("After call to sync func...