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What is the volatile keyword useful for?
...isibility. Basically, the value of a volatile field becomes visible to all readers (other threads in particular) after a write operation completes on it. Without volatile, readers could see some non-updated value.
To answer your question: Yes, I use a volatile variable to control whether some code ...
What are the differences between a clustered and a non-clustered index?
...
Clustered Index
Only one per table
Faster to read than non clustered as data is physically stored in index order
Non Clustered Index
Can be used many times per table
Quicker for insert and update operations than a clustered index
Both types of index will improve p...
Recommended way to get hostname in Java
...ent systems.
The following code tries to do the following:
On Windows
Read the COMPUTERNAME environment variable through System.getenv().
Execute hostname.exe and read the response
On Linux
Read the HOSTNAME environment variable through System.getenv()
Execute hostname and read the response
...
Unable to copy file - access to the path is denied
... in my case the reason that folder and the solution turned into ReadOnly and subsequently VS had trouble building it, was because some file failed to synch to GoogleDrive and got somehow locked by that process. So for me to rebuild properly I had to close GoogleDrive and then it built jus...
Accessing Session Using ASP.NET Web API
...t.com/en-us/aspnet/core/fundamentals/app-state
Performance Concerns
Read Simon Weaver's answer below regarding performance. If you're accessing session data inside a WebApi project it can have very serious performance consequence - I have seen ASP.NET enforce a 200ms delay for concurrent requ...
Can vim monitor realtime changes to a file
... monitor a text file in realtime
but I want to do it in vim. I know I can read an opened file use tail -f sample.xml file, and when new content is written to the file, it'll also write the new content to my screen. Can I have vim automatically fill the new data when a file is updated?
...
Iterating over each line of ls -l output
...anently:
(IFS='
'
for x in `ls -l $1`; do echo $x; done)
Or use while | read instead:
ls -l $1 | while read x; do echo $x; done
One more option, which runs the while/read at the same shell level:
while read x; do echo $x; done << EOF
$(ls -l $1)
EOF
...
Assign variable in if condition statement, good practice or not? [closed]
... Not to dig up an old comment, but I don't agree with your arguments. Readable code should explain itself without the need for a comment - adding a comment to confusing code isn't a remedy. As for the second part, which says the alternative is to call the function again, I don't think anyone in...
Build a simple HTTP server in C [closed]
...tpd. If you want to write it from scratch, then you'll want to thoroughly read RFC 2616. Use BSD sockets to access the network at a really low level.
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Streaming a video file to an html5 video player with Node.js so that the video controls continue to
...file, you should first check the Accept Ranges header in the REQUEST, then read in and send just that bit. fs.createReadStream support start, and end option for that.
So I tried an example and it works. The code is not pretty but it is easy to understand. First we process the range header to get th...