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Does JSON syntax allow duplicate keys in an object?

...s report the last name/value pair only. Other implementations report an error or fail to parse the object, and some implementations report all of the name/value pairs, including duplicates. Also, as Serguei pointed out in the comments: ECMA-262 "ECMAScript® Language Specification", rea...
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Using the “final” modifier whenever applicable in Java [closed]

...oo.txt"); else System.out.println("test failed"); in.read(); // Compiler error because variable 'in' might be unassigned By preventing a variable from being assigned more than once, you discourage overbroad scoping. Instead of this: String msg = null; for(int i = 0; i < 10; i++) { msg...
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Download and open PDF file using Ajax

...h: function (response, status, xhr, self, filename) { }, onErrorOccured: function (response, status, xhr, self) { } }; this.download = function () { var self = this; $.ajax({ type: this.settings.type, url: this.settings.url, ...
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How can I negate the return-value of a process?

...he 'do nothing successfully' option was correct; maybe it should report an error when it isn't asked to do anything. The code in '"stderr.h"' provides simple error reporting facilities - I use it everywhere. Source code on request - see my profile page to contact me. ...
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How to get a index value from foreach loop in jstl

... I get this Uncaught ReferenceError: loop is not defined ` and +1 for your effort – Java Questions Sep 16 '13 at 10:46 ...
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Deleting elements from std::set while iterating

... If you run your program through valgrind, you'll see a bunch of read errors. In other words, yes, the iterators are being invalidated, but you're getting lucky in your example (or really unlucky, as you're not seeing the negative effects of undefined behavior). One solution to this is to cre...
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Can someone explain Microsoft Unity?

...>(); and you didn't Configure the SomeConcreteClass? Would you get and error in that case? – RayLoveless Jun 7 '13 at 21:50 ...
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Start may not be called on a promise-style task. exception is coming

... You are getting that error because the Task class already started the task before giving it to you. You should only ever call Start on a task that you create by calling its constructor, and you shouldn't even do that unless you have a compelling...
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How to use enums as flags in C++?

...uld NOT be the type of your variable. Your variable should be int and the error will go away. Putting hexadecimal values like some other people suggested is not needed. It makes no difference. The enum values ARE of type int by default. So you can surely bitwise OR combine them and put them tog...
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What does the [Flags] Enum Attribute mean in C#?

...say ThirtySecond = 2147483648 for an int type enum, the compiler throws an error. – aaaantoine Jun 3 '14 at 20:58 ...