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explicit casting from super class to subclass

... telling the compiler "trust me. I'm a professional, I know what I'm doing and I know that although you can't guarantee it, I'm telling you that this animal variable is definitely going to be a dog." Since the animal isn't actually a dog (it's an animal, you could do Animal animal = new Dog(); and ...
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How to add to the PYTHONPATH in Windows, so it finds my modules/packages?

...ue:C:\path\to\python\version Click [OK] Locate the "Path" System variable and click [Edit] Add the following to the existing variable: %PY_HOME%;%PY_HOME%\Lib;%PY_HOME%\DLLs;%PY_HOME%\Lib\lib-tk; Click [OK] to close all of the windows. As a final sanity check open a command prompt and enter py...
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filename and line number of python script

How can I get the file name and line number in python script. 9 Answers 9 ...
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iOS: Modal ViewController with transparent background

...ally, with a transparent background. My goal is to let both the presenting and presented view controllers's view to be displayed at the same time. The problem is, when the presenting animation finishes, the presenting view controller's view disappears. ...
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Why would $_FILES be empty when uploading files to PHP?

...e WampServer 2 installed on my Windows 7 computer. I'm using Apache 2.2.11 and PHP 5.2.11. When I attempt to upload any file from a form, it seems to upload, but in PHP, the $_FILES array is empty. There is no file in the c:\wamp\tmp folder. I have configured php.ini to allow file uploads and ...
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How to randomly select rows in SQL?

... 2005. In my db, I have a table "customerNames" which has two columns "Id" and "Name" and approx. 1,000 results. 11 Answer...
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Order of serialized fields using JSON.NET

... documentation for more information. Pass the JsonProperty an Order value and the serializer will take care of the rest. [JsonProperty(Order = 1)] This is very similar to the DataMember(Order = 1) of the System.Runtime.Serialization days. Here is an important note from @kevin-babcock ...
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Responsively change div size keeping aspect ratio [duplicate]

...e same effect with another element, is it possible at all to tie the width and the height together using percentage? 5 Answ...
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TFS checkin error - could not find file

...ce Control Explorer (View > Other Windows > Source Control Explorer) and either Delete the nonexistent files or right-click on the offending files and Undo Pending Changes. You can also undo these specific changes from the Pending Changes panel in Team Explorer. ...
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JavaScript math, round to two decimal places [duplicate]

... ) instead of forcing type coersion as it is more obvious to other people (and you later) – Hugo Buff Mar 24 '17 at 14:59 ...