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Condition within JOIN or WHERE
...lly. In "SQL Performance Tuning" by Peter Gulutzan and Trudy Pelzer, they tested multiple brands of RDBMS and found no performance difference.
I prefer to keep join conditions separate from query restriction conditions.
If you're using OUTER JOIN sometimes it's necessary to put conditions in the ...
Obtaining a powerset of a set in Java
...(newSet);
sets.add(set);
}
return sets;
}
And a test, given your example input:
Set<Integer> mySet = new HashSet<Integer>();
mySet.add(1);
mySet.add(2);
mySet.add(3);
for (Set<Integer> s : SetUtils.powerSet(mySet)) {
System.out.println(s);
}
...
How can I display an RTSP video stream in a web page?
...D1C159921"
codebase="http://downloads.videolan.org/pub/videolan/vlc/latest/win32/axvlc.cab"
width="640" height="480" id="vlc" events="True">
<param name="Src" value="rtsp://cameraipaddress" />
<param name="ShowDisplay" value="True" />
<param name="AutoLoop" value...
How to remove the lines which appear on file B from another file A?
...ring the first file in an associative array as keys for a later "contains" test.
NR==FNR is checking whether we're scanning the first file, where the global line counter (NR) equals to the current file line counter (FNR).
a[$0] adds the current line to the associative array as key, note that this be...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
...nswers are incorrect in that most over-ride the 'is this connection HTTPS' test to allow serving the pages over http irrespective of connection security.
The secure answer using an error-page on an NGINX specific http 4xx error code to redirect the client to retry the same request to https. (as out...
multi-layer perceptron (MLP) architecture: criteria for choosing number of hidden layers and size of
...ng the number of neurons in the Hidden Layer:
During your model building, test obsessively; testing will reveal the signatures of "incorrect" network architecture. For instance, if you begin with an MLP having a hidden layer comprised of a small number of nodes (which you will gradually increase as...
What is the difference between Bower and npm?
.... runtime, where you avoid duplication), and use npm for other stuff, like testing, building, optimizing, checking, etc. (e.g. development time, where duplication is of less concern).
Update for npm 3:
npm 3 still does things differently compared to Bower. It will install the dependencies globally...
How to show google.com in an iframe?
..."Google Custom" which sends different X-Frame-Options. google.com/custom?q=test&btnG=Search
– Joel Mellon
Aug 28 '13 at 19:33
7
...
How to properly add include directories with CMake
...done.
First add the directory to be included:
target_include_directories(test PRIVATE ${YOUR_DIRECTORY})
In case you are stuck with a very old CMake version (2.8.10 or older) without support for target_include_directories, you can also use the legacy include_directories instead:
include_directo...
jQuery UI datepicker change event not caught by KnockoutJS
... 313 of knockout.validation.js. Small example here: frikod.se/~capitol/fel/test.html
– Alexander Kjäll
Apr 18 '13 at 11:18
...