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Mongo: find items that don't have a certain field

... Be warned, $exist queries cannot use indexes (see mongodb.org/display/DOCS/…). – Theo Apr 19 '11 at 17:03 4 ...
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Calling a function from a string in C#

I know in php you are able to make a call like: 7 Answers 7 ...
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Generate colors between red and green for a power meter?

...ges using this code ... any ideas? For example, the following percentages all return RGB 1,255,0: 0.277, 0.222, 0.111 ... the higher values (for example 1.0) do return the correct RGBs with brighter green, but they stop trailing off after a threshold and I only get shades of green on my scale. ...
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ArrayIndexOutOfBoundsException with custom Android Adapter for multiple views in ListView

... For those who are stumped, the ViewType must return a zero based index . eg (0, 1, 2...). in my case i tried to reuse the R.layout... for the ViewType. i guess internally the ViewType's value is being used as the index for recycling pool and not as a key. – Samuel ...
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How to send password securely over HTTP?

...alid complaint, since you can get them for $30 these days. Is your data really not worth 30 bucks to protect? – caf Oct 18 '09 at 2:08 3 ...
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C# Convert List to Dictionary

... with duplicate is you can do like this var dic = slist.Select((element, index)=> new{element,index} ) .ToDictionary(ele=>ele.index.ToString(), ele=>ele.element); or easy way to do is var res = list.ToDictionary(str => str, str=> str); but make sure that there...
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Comet implementation for ASP.NET? [closed]

...dows Runtime, and .NET Compact, with server-side support for .NET/Mono and PHP. Clustering is supported using either SQL Server or Azure Caching out of the box, but custom providers can be written for just about anything (Redis, NCache). Disclaimer: I work for the company that develops this produc...
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How do I access the command history from IDLE?

...... it seems like it is designed to see how used to you are spreading your index and middle fingers apart. – nonopolarity Jun 28 '10 at 12:32 ...
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How to filter by object property in angularJS

...r is applied which breaks the tie between a filtered item and its original index in the unfiltered array. Is there a way to maintain the tie or is ng-hide my only option? Here's a tutorial for an alternative to filtering by using ng-hide: bennadel.com/blog/… ...
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How to best position Swing GUIs?

...take part in programming competitions, I often have to search for the loop index to, say, +1 or -1 from it to fix off by one errors. In those cases, searching for ii is much easier than searching for i, regardless of which editor I used. Similarly, I use jj and kk for the nested loop indexes. :) ...