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SQL NVARCHAR and VARCHAR Limits
... data (1 billion double byte characters).
From nchar and nvarchar in Books online the grammar is
nvarchar [ ( n | max ) ]
The | character means these are alternatives. i.e. you specify either n or the literal max.
If you choose to specify a specific n then this must be between 1 and 4,000 but using...
What is a CSRF token ? What is its importance and how does it work?
...Forgery (CSRF) in simple words
Assume you are currently logged into your online banking at www.mybank.com
Assume a money transfer from mybank.com will result in a request of (conceptually) the form http://www.mybank.com/transfer?to=<SomeAccountnumber>;amount=<SomeAmount>. (Your account...
How do I modify fields inside the new PostgreSQL JSON datatype?
...n't find any examples of this in the postgresql documentation, or anywhere online. I have tried the obvious:
21 Answers
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How do I match any character across multiple lines in a regular expression?
...gex engine, the . matches any char there (including line breaks). See this online Bash demo.
– Wiktor Stribiżew
Dec 19 '18 at 7:33
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Determine Whether Two Date Ranges Overlap
...in Snodgrass's Developing Time-Oriented Applications in SQL (PDF available online at URL), and in Date, Darwen and Lorentzos Temporal Data and the Relational Model (2002) or Time and Relational Theory: Temporal Databases in the Relational Model and SQL (2014; effectively the second edition of TD&am...
How to build & install GLFW 3 and use it in a Linux project
...till seems to work in 2020 however it is not explicitly stated by the glfw online instructions.
cmake -G "Unix Makefiles"
You may need to run sudo apt-get build-dep glfw3 before (?). I ran both this command and sudo apt install xorg-dev as per the instructions.
Finally run make
Now in your proj...
What is the difference between sigaction and signal?
... should use sigaction()
rather than signal()
http://pubs.opengroup.org/onlinepubs/009695399/functions/signal.html#tag_03_690_07
Whether you're starting from scratch or modifying an old program, sigaction should be the right option.
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How to initialize log4j properly?
...
Find a log4j.properties or log4j.xml online that has a root appender, and put it on your classpath.
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout...
Passing arguments to “make run”
...it appears to be an archaic form now in make. $() is recommended by every online tutorial I've looked at. $() is also more consistent with other tools such as bash.
– John Knoeller
Feb 7 '10 at 19:58
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Rolling median algorithm in C
...nt, pad0
__date__ = "2009-10-27 oct"
__author_email__ = "denis-bz-py at t-online dot de"
#...............................................................................
class Median1:
""" moving median 1d for quantized, e.g. 8-bit data """
def __init__( s, nlevel, window, counts ):
...