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What is the meaning of the prefix N in T-SQL statements and when should I use it?
... it does the other way then performance will get hurt because the column's index (if available) wont be used.
2. Character set:
If the column is of type nvarchar or nchar, then always use the prefix N while specifying the character string in the WHERE criteria/UPDATE/INSERT clause. If you do not d...
SSL certificate rejected trying to access GitHub over HTTPS behind firewall
...it to individual certificates put them to /usr/ssl/certs (your CApath) and index them.
Here is how to do it. With cygwin setup.exe install curl and openssl packages
execute:
$ cd /usr/ssl/certs
$ curl http://curl.haxx.se/ca/cacert.pem |
awk '{print > "cert" (1+n) ".pem"} /-----END CERTIFICAT...
What is better, adjacency lists or adjacency matrices for graph problems in C++?
...y exists you can check for the existence of an edge in constant time using indexes. However, neighbour lookup takes O(n) since you need to check all possible neighbours.
The obvious space drawback is that for sparse graphs a lot of padding is added. See the memory discussion above for more informati...
Position Absolute + Scrolling
...
top: 20px;
right: 50px;
height: 10px;
width: 600px;
z-index: 1000;
}
And in the HTML
<body>
<div id="mess"></div>
<div id="data">
Much content goes here.
</div>
</body>
When #data becomes longer tha the sceen, #mess ke...
What's the difference between integer class and numeric class in R
...ou know that they will never be converted to doubles (used as ID values or indexing) since integers require less storage space. But if they are going to be used in any math that will convert them to double, then it will probably be quickest to just store them as doubles to begin with.
...
How can I use Google's Roboto font on a website?
...e a CDN
TEMPORARILY add the cdn for the css to load the roboto fonts into index.html and let the page load.
from google dev tools look at sources and expand the fonts.googleapis.com node and view the content of the css?family=Roboto:300,400,500&display=swap file and copy the content. Put this ...
What is the best project structure for a Python application? [closed]
...
|- README.md
|- TODO.md
|- docs
| |-- conf.py
| |-- generated
| |-- index.rst
| |-- installation.rst
| |-- modules.rst
| |-- quickstart.rst
| |-- sandman.rst
|- requirements.txt
|- sandman
| |-- __init__.py
| |-- exception.py
| |-- model.py
| |-- sandman.py
| |-- test
| ...
When is it right for a constructor to throw an exception?
...ys "Fix your code so that it never triggers a boneheaded exception – an 'index out of range' exception should never happen in production code."
– Jacob Krall
Jul 7 '10 at 20:56
1...
How do I get a Cron like scheduler in Python? [closed]
...w()).seconds)
A few things to note: Python's weekdays / months are zero indexed (unlike cron), and that range excludes the last element, hence syntax like "1-5" becomes range(0,5) - ie [0,1,2,3,4]. If you prefer cron syntax, parsing it shouldn't be too difficult however.
...
dealloc in Swift
....apple.com/library/content/releasenotes/Foundation/RN-FoundationOlderNotes/index.html#X10_11Notes
NSNotificationCenter
In OS X 10.11 and iOS 9.0 NSNotificationCenter and NSDistributedNotificationCenter will no longer send notifications to registered observers that may be deallocated. If the observe...