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What is the difference between Amazon S3 and Amazon EC2 instance?

...s like a remote computer running Windows or Linux and on which you can install whatever software you want, including a Web server running PHP code and a database server. Amazon S3 is just a storage service, typically used to store large binary files. Amazon also has other storage and database servi...
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Oracle SQL Query for listing all Schemas in a DB

... in oracle mean it's a user ? I mean a schema = user ? and under that user all the tables created same like MySQL ? – Osama Al-Banna Jun 15 '16 at 14:12 add a comment ...
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What exactly does the post method do?

...() : Starts executing the active part of the class' code. This method is called when a thread is started that has been created with a class which implements Runnable. getView().post(new Runnable() { @Override public void run() { getView().startAnimation(a); ...
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Convert string to Python class object?

... there's a class with that name in the currently defined namespace. Essentially, I want the implementation for a function which will produce this kind of result: ...
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Proper way to implement IXmlSerializable?

...ation that was written by the WriteXml method. When this method is called, the reader is positioned at the start of the element that wraps the information for your type. That is, just before the start tag that indicates the beginning of a serialized object. When this method return...
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How do I check if a list is empty?

...cMahon - it's a trade-off between explicitness and type flexibility. generally, "being explicit" means not doing "magical" things. on the other hand, "duck typing" means working with more general interfaces, rather than explicitly checking for types. so something like if a == [] is forcing a part...
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How do I design a class in Python?

I've had some really awesome help on my previous questions for detecting paws and toes within a paw , but all these solutions only work for one measurement at a time. ...
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What is your single most favorite command-line trick using Bash? [closed]

We all know how to use <ctrl>-R to reverse search through history, but did you know you can use <ctrl>-S to forward search if you set stty stop "" ? Also, have you ever tried running bind -p to see all of your keyboard shortcuts listed? There are over 455 on Mac OS X by default. ...
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Python Linked List

...le to reference separate parts of them. Make them immutable and they are really easy to work with! 28 Answers ...
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How to crop an image in OpenCV using Python

...copy region of interest If we consider (0,0) as top left corner of image called im with left-to-right as x direction and top-to-bottom as y direction. and we have (x1,y1) as the top-left vertex and (x2,y2) as the bottom-right vertex of a rectangle region within that image, then: roi = im[y1:y2, x1...