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C++ code file extension? .cc vs .cpp [closed]
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@CharlesAddis - Yes, I had to convert lots of code that had "abcd.H" (the c++ interface) and "abcd.h" (the C interface) in the same directory to "abcd.hpp" and "abcd.h" because just doing an "svn co" or unzip onto a Windows box or Mac OS X box (with defau...
C fopen vs open
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open() is a low-level os call. fdopen() converts an os-level file descriptor to the higher-level FILE-abstraction of the C language. fopen() calls open() in the background and gives you a FILE-pointer directly.
There are several advantages to using FILE-objects r...
Bash variable scope
...do
var="abc"
echo $var | xsel -i -p # redirect stdin to the X primary selection
done
var=$(xsel -o -p) # redirect back to stdout
echo $var
EDIT:
Here, xsel is a requirement (install it).
Alternatively, you can use xclip:
xclip -i -selection clipboard
instead of
xsel -i -p
...
Regular expression to allow spaces between words
... @Pierre - It's fairly difficult to take human instructions and convert them to explicit rules. (The human language is fluid and full of ambiguities, and our brains do most of the work required to resolve things and fill in the gaps. Computers don't have such a brain, and clever attempts ...
Multiple Indexes vs Multi-Column Indexes
...e multi-column index can be used for queries referencing all the columns:
SELECT *
FROM TableName
WHERE Column1=1 AND Column2=2 AND Column3=3
This can be looked up directly using the multi-column index. On the other hand, at most one of the single-column index can be used (it would have to look u...
Is Big O(logn) log base e?
...algorithm's run-time.
In big-O() notation, constant factors are removed. Converting from one logarithm base to another involves multiplying by a constant factor.
So O(log N) is equivalent to O(log2 N) due to a constant factor.
However, if you can easily typeset log2 N in your answer, doing so is...
How can I display an RTSP video stream in a web page?
...load a single RTSP stream to centrally-hosted streaming server, which will convert your stream to RTMP/MPEG-TS and publish it to Flash players/Set-Top boxes.
Wowza, Erlyvideo, Unreal Media Server, Red5 are your options.
sh...
IIS7 Cache-Control
...
That's not true Jeff.
You simply have to select a folder within your IIS 7 Manager UI (e.g. Images or event the Default Web Application folder) and then click on "HTTP Response Headers". Then you have to click on "Set Common Header.." in the right pane and select th...
HTTP Error 503, the service is unavailable
...ur web site, and click on it. On the Advanced Settings menu to the right, select Identity and change it and enter new user and password. Click on your Application Pool again, and select Recycle to restart it.
You can also try looking at the error message in Event Viewer, under Windows Logs, Applic...
How to Copy Text to Clip Board in Android?
...n't a reference to a
// note, then
// this converts whatever it is to text.
if (text == null) {
text = coerceToText(context, item).toString();
}
return text;
}
}
return ""...