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What is a sealed trait?
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From the daily-scala blog:
When a trait is "sealed" all of its subclasses are declared within the
same file and that makes the set of subclasses finite which allows
certain compiler checks.
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How to create ls in windows command prompt?
... file exists to your PATH environment variable
You could then execute ls from a command prompt.
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How to use Git Revert
...prior to committing the revert. This is the default if you run the command from a terminal.
--no-commit
Usually the command automatically creates some commits with commit log messages stating which commits were reverted. This flag applies the changes necessary to revert the named commits t...
Making git diff --stat show full file path
On doing git diff --stat some files are listed with full path from repository base but some files are listed as:
7 Answer...
Keyboard shortcuts with jQuery
...nt the default bubbling up to the browser? Nothing mentioned on the readme from what I see.
– Gurnard
Apr 11 '19 at 13:14
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How to crop an image using C#?
...an use Graphics.DrawImage to draw a cropped image onto the graphics object from a bitmap.
Rectangle cropRect = new Rectangle(...);
Bitmap src = Image.FromFile(fileName) as Bitmap;
Bitmap target = new Bitmap(cropRect.Width, cropRect.Height);
using(Graphics g = Graphics.FromImage(target))
{
g.Dra...
socket.shutdown vs socket.close
...s to the other end of the connection there is no further intention to read from or write to the socket. Then close frees up any memory associated with the socket.
Omitting shutdown may cause the socket to linger in the OSs stack until the connection has been closed gracefully.
IMO the names 'shutd...
How to know if other threads have finished?
...t Exception when it completes, or
Use locks or synchronizers or mechanisms from java.util.concurrent, or
More orthodox, create a listener in your main Thread, and then program each of your Threads to tell the listener that they have completed.
How to implement Idea #5? Well, one way is to first c...
What are the differences between concepts and template constraints?
.... If you had done this in C++11, you'd have had some horrible error thrown from inside the sort function that makes no sense to anybody.
Constraints predicates are very similar to type traits. They take some template argument type and give you some information about it. Constraints attempt to answ...
How to delete a file after checking whether it exists
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@ keeps you from having to double up the backslashes.
– PRMan
Feb 21 '17 at 0:34
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