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When NOT to use yield (return) [duplicate]

...is h deep. Then there will at most points be O(h) nested iterators built. Calling "MoveNext" on the outer iterator will then make O(h) nested calls to MoveNext. Since it does this O(n) times for a tree with n items, that makes the algorithm O(hn). And since the height of a binary tree is lg n <=...
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Adding devices to team provisioning profile

...ed to add a device to my team provisioning profile, however I do not physically have the device so I can't hook it up to my computer so Xcode can't add the UDID to my devices and to the team provisioning profile. Is there a way to add it manually to the team provisioning profile, I can't figure out...
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How do I start Mongo DB from Windows?

I have installed MongoDB on my Windows 7 (64 bit) machine. I have created the path data/db too but when I tried to start mongodb using the command 'C:\mongodb\bin\mongod.exe' , it is not starting. It is showing admin web console waiting for connections on port 28017 . ...
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How to add default value for html ? [closed]

...swered Jun 2 '14 at 16:54 bhavya_wbhavya_w 6,06455 gold badges2525 silver badges3636 bronze badges ...
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Prevent onmouseout when hovering child element of the parent absolute div WITHOUT jQuery

...Listener('mouseout',onMouseOut,true); I made a quick JsFiddle demo, with all the CSS and HTML needed, check it out... EDIT FIXED link for cross-browser support http://jsfiddle.net/RH3tA/9/ NOTE that this only checks the immediate parent, if the parent div had nested children then you have to s...
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Programmer Puzzle: Encoding a chess board state throughout a game

..., 2 bishops, 1 queen and 1 king as illustrated here: Positions are generally recorded as a letter for the column followed by the number for the row so White’s queen is at d1. Moves are most often stored in algebraic notation, which is unambiguous and generally only specifies the minimal informa...
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Generating random strings with T-SQL

... that generates object names in a reproducible manner: alter procedure usp_generateIdentifier @minLen int = 1 , @maxLen int = 256 , @seed int output , @string varchar(8000) output as begin set nocount on; declare @length int; declare @alpha varchar(8000) , @digit...
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How to comment out a block of Python code in Vim

I was wondering if there was any key mapping in Vim to allow me to indent certain lines of code (whether those lines have been selected in visual mode, or n lines above/below current cursor position). ...
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Xcode 6: Keyboard does not show up in simulator

The keyboard does not show up when I run the simulator and click in the UITextView. How do I re-enable the keyboard? 13 Ans...
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CSS Box Shadow Bottom Only [duplicate]

... Do this: box-shadow: 0 4px 2px -2px gray; It's actually much simpler, whatever you set the blur to (3rd value), set the spread (4th value) to the negative of it. share | impr...