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How to solve PHP error 'Notice: Array to string conversion in…'

...k you so much for your clear explanation. It prints out what exactly you said. It means my array has been already sent to the PHP file. Seems I can use without without any problem. Thankz again. – t4thilina Nov 16 '13 at 11:02 ...
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How do I cast a variable in Scala?

...given type: g match { case g2: Graphics2D => g2 case _ => throw new ClassCastException } This block replicates the semantics of the asInstanceOf[Graphics2D] method, but with greater flexibility. For example, you could provide different branches for various types, effectively performing...
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Why can't I use a list as a dict key in python?

... so true, that I wanted to suggest a way around it, just in case somebody (new) will be looking for it... – Remi Aug 31 '11 at 14:06 5 ...
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In MySQL, can I copy one row to insert into the same table?

... I'm assuming you want the new record to have a new primarykey? If primarykey is AUTO_INCREMENT then just do this: INSERT INTO table (col1, col2, col3, ...) SELECT col1, col2, col3, ... FROM table WHERE primarykey = 1 ...where col1, col2, col3, .....
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What is the meaning of “$” sign in JavaScript

... is a string interpolation operator in a template "literal" eg. var s = "new" ; // you can put whatever you think appropriate here. var s2 = `There are so many ${s} ideas these days !!` ; //back-ticks not quotes console.log(s2) ; result: There are so many new ideas these days !! ...
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C# constructor execution order

...public class Program { public static void Main() { var d = new D(); } } public class A { public readonly C ac = new C("A"); public A() { Console.WriteLine("A"); } public A(string x) : this() { Console.WriteLine("A got " + x); } } pub...
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Are there any side effects of returning from inside a using() statement?

...c Transaction GetMostRecentTransaction(int singleId) { using (var db = new DataClasses1DataContext()) { return (from t in db.Transactions orderby t.WhenCreated descending where t.Id == singleId select t).SingleOrDefault(); } } Ind...
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What is the most efficient/elegant way to parse a flat table into a tree?

... @Reza, so that if you add a new child node, you can query for all descendants of (1) and those are the ancestors of the new child. – Bill Karwin Nov 9 '15 at 22:52 ...
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Create request with POST, which response codes 200 or 201 and content

Suppose I write a REST service whose intent is to add a new data item to a system. 7 Answers ...
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Positioning a div near bottom side of another div

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