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Convert a series of parent-child relationships into a hierarchical tree?

...o '</ul>'; } } You'll only save 8 iterations on a dataset as small as this but on bigger sets it could make a difference. share | improve this answer | follow ...
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Disable assertions in Python

...trate each. For the whole process Using the -O flag (capital O) disables all assert statements in a process. For example: $ python -Oc "assert False" $ python -c "assert False" Traceback (most recent call last): File "<string>", line 1, in <module> AssertionError Note that by di...
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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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Vim: apply settings on files in directory

How do I specify Vim settings for all files under the current directory? 11 Answers 11...
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“is” operator behaves unexpectedly with integers

...3): The current implementation keeps an array of integer objects for all integers between -5 and 256, when you create an int in that range you actually just get back a reference to the existing object. So it should be possible to change the value of 1. I suspect the behaviour of Py...
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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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Rails layouts per action?

...th this is that you cannot access objects such as current_user to conditionally determine the layout – Andrew K Dec 14 '14 at 5:25 ...
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AngularJS access parent scope from child controller

...rty}} </div> See jsFiddle: http://jsfiddle.net/2r728/ Update Actually since you defined cities in the parent controller your child controller will inherit all scope variables. So theoritically you don't have to call $parent. The above example can also be written as follows: function Paren...
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MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)

...ands. The recommended solution is to drop this anonymous user (this is usually a good thing to do anyways). Below edits are mostly irrelevant to the main question. These are only meant to answer some questions raised in other comments within this thread. Edit 1 Authenticating as 'bill'@'%' thr...
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Make a DIV fill an entire table cell

...(not tested elsewhere): <table style="width:100px"> <!-- Not actually necessary; just makes the example text shorter --> <tr><td>test</td><td>test</td></tr> <tr> <td style="padding:0;"> <div style="height:100%; widt...