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The opposite of Intersect()
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This code enumerates each sequence only once and uses Select(x => x) to hide the result to get a clean Linq-style extension method. Since it uses HashSet<T> its runtime is O(n + m) if the hashes are well distributed. Duplicate elements in either list are omitted.
publi...
Getting all types in a namespace via reflection
...etTypes()
where t.IsClass && t.Namespace == nspace
select t;
q.ToList().ForEach(t => Console.WriteLine(t.Name));
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Using HTML5/Canvas/JavaScript to take in-browser screenshots
Google's "Report a Bug" or "Feedback Tool" lets you select an area of your browser window to create a screenshot that is submitted with your feedback about a bug.
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Unable to cast object of type 'System.DBNull' to type 'System.String`
... even both. If the WHERE does not match any row, you'll get a null, if the selected row has NULL in that column, the return value is System.DBNull.
– Alexander
May 27 '14 at 7:52
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How to increase editor font size?
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Ctrl + Shift + A --> enter Font size --> select Increase Font Size
this will open Dialog for Enter Action or option Name
enter Fonte Size it will show selection for select Increase Font Size
Done :)
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How to use arguments from previous command?
... see:
$ echo ace
By the way, you could have put the echo on the line by selecting argument 0:
Press Alt-0 Alt-Ctrl-y
Edit:
To answer the question you added to your original:
You can press Alt-0 then repeatedly press Alt-. to step through the previous commands (arg 0). Similarly Alt-- then rep...
How to use mongoimport to import csv
...Chef Tool (3.2+ version). Might help someone in future.
You just need to select collection
Select file to import
You can also unselect data which is going to import. Also many options are there.
Collection imported
See how to import video
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Android - Emulator in landscape mode, screen does not rotate
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In my case the Skin option in AVD settings was the problem. When I selected "No skin", it worked.
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What is the Windows equivalent of the diff command?
...nd line.
You can set the PATH variable by right clicking on Computer and selecting Properties. Then you can click on Advanced System Settings on the left side of the screen. In the pop up, click Environment Variables and then either add or update the PATH variable in your user variables with Git\b...
R: Comment out block of code [duplicate]
...tors use something like command or control and single quote to comment out selected lines of code. In RStudio it's Command or Control+/. Check in your editor.
It's still commenting line by line, but they also uncomment selected lines as well. For the Mac RGUI it's command-option ' (I'm imagining...