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What is the difference between shallow copy, deepcopy and normal assignment operation?

...ble towards the existing object. The docs explain the difference between shallow and deep copies: The difference between shallow and deep copying is only relevant for compound objects (objects that contain other objects, like lists or class instances): A shallow copy constructs a new...
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Django ManyToMany filter()

...nes__in=[zone1, zone2, zone3]) The double underscore (__) syntax is used all over the place when working with querysets. share | improve this answer | follow ...
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How do I list all tables in a schema in Oracle SQL?

How do i list all tables in a schema in Oracle SQL? 14 Answers 14 ...
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Circle line-segment collision detection algorithm?

... exdx + eydy - dxh - dyk ) + ex2 + ey2 - 2exh - 2eyk + h2 + k2 - r2 = 0 Finally, t2( _d * _d ) + 2t( _e * _d - _d * _c ) + _e * _e - 2( _e*_c ) + _c * _c - r2 = 0 *Where _d is the vector d and * is the dot product.* And then, t2( _d * _d ) + 2t( _d * ( _e - _c ) ) + ( _e - _c ) * ( _e - _c ) - r2 = ...
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Camera orientation issue in Android

... This doesn't seem to work on some devices, it returns 0 for all orientations.. I know it happens on Galaxy S Infuse and Sony Xperia Arc, and S II.. Interesting thing here is that when these same images are selected from gallery, the content provider has the proper orientation value.. ...
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__proto__ VS. prototype in JavaScript

...x = x; this.y = y; } var myPoint = new Point(); // the following are all true myPoint.__proto__ == Point.prototype myPoint.__proto__.__proto__ == Object.prototype myPoint instanceof Point; myPoint instanceof Object; Here Point is a constructor function, it builds an object (data structure) p...
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How to lock orientation during runtime

Is there a way to lock orientation during runtime? For example I'd like to allow the user to lock the screen to landscape if the user currently in landscape and toggle the menu option. ...
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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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Does this app use the Advertising Identifier (IDFA)? - AdMob 6.8.0

...it Ad Tracking. Including Limit Ad Tracking. This is what the last box is all about. So you must check the that box if you use AdMob. If you use other SDK I strongly recommend checking if they respect the guidelines as well. Since I run only ads (Google AdMob), I checked the first (Serve ads...) a...
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Check if a folder exist in a directory and create them using C#

...er named MP_Upload , and if it does not exist, create the folder automatically? 7 Answers ...