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How would you do a “not in” query with LINQ?

I have two collections which have property Email in both collections. I need to get a list of the items in the first list where Email does not exist in the second list. With SQL I would just use "not in", but I do not know the equivalent in LINQ. How is that done? ...
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File Upload using AngularJS

...er browsers: https://github.com/leon/angular-upload - uses iframes as a fallback https://github.com/danialfarid/ng-file-upload - uses FileAPI/Flash as a fallback And some other options: https://github.com/nervgh/angular-file-upload/ https://github.com/uor/angular-file https://github.com/twilso...
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Swapping two variable value without using third variable

...ation, when one is set to 0, both are set to 0. When both *x and *y are 0, all other xor operations on *x and *y will equal 0 (as they are the same), which means that the function will set both *x and *y set to 0. If they have the same values but not the same memory location, everything works as ex...
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eclipse won't start - no java virtual machine was found

Eclipse was running fine yesterday (and has been since I installed it about a year ago). Now all the sudden I'm getting the following error on startup: ...
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LaTeX table positioning

... This is a really really useful package. Thanks for sharing! – John David Jun 9 at 3:30 add a comment ...
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Stopwatch vs. using System.DateTime.Now for timing events [duplicate]

...time by counting timer ticks in the underlying timer mechanism. If the installed hardware and operating system support a high-resolution performance counter, then the Stopwatch class uses that counter to measure elapsed time. Otherwise, the Stopwatch class uses the system timer to measure elapsed ti...
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Most efficient method to groupby on an array of objects

... Joseph Gravlin 322 bronze badges answered Jul 12 '16 at 11:25 mortbmortb 6,97133 gold badges1...
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How can I create Min stl priority_queue?

... Actually, your right, 5) does work, it's just weird, I've never seen < overloaded like that, it's better to overload > and use greater<people> – Rockstar5645 Feb 27 '18 at 7:23 ...
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

...----- -------- ------------------------- 0xCD Clean Memory Allocated memory via malloc or new but never written by the application. 0xDD Dead Memory Memory that has been released with delete or free. It is used to detect w...
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LINQ Aggregate algorithm explained

This might sound lame, but I have not been able to find a really good explanation of Aggregate . 12 Answers ...