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What do 'real', 'user' and 'sys' mean in the output of time(1)?
... so times recorded for very short running tasks may be subject to rounding errors, as the example given by the original poster shows.
A brief primer on Kernel vs. User mode
On Unix, or any protected-memory operating system, 'Kernel' or 'Supervisor' mode refers to a privileged mode that the CPU can...
How to read attribute value from XmlNode in C#?
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A shorthand way of not getting an error for nulls is node.Attributes?["Name"]?.Value
– brandonstrong
Mar 2 '17 at 19:51
1
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log4j: Log output of a specific class to a specific appender
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An example:
log4j.rootLogger=ERROR, logfile
log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.logfile.datePattern='-'dd'.log'
log4j.appender.logfile.File=log/radius-prod.log
log4j.appender.logfile.layout=org.apache.log4j.Pa...
Checking length of dictionary object [duplicate]
...th of my dictionary to test whether it had any objects in it. For regular error handling I guess you'd just check for null on a dictionary but just wanted to see how many returned and was added to my dictionary. So the problem was not how to iterate, just see how to get the count which I just thou...
C dynamically growing array
...w to use it incorrectly, occasionally under the guise that they've omitted error handling, even though this is a common pitfall which needs mention. Here's an answer explaining how to use realloc correctly. Take note that the answer is storing the return value into a different variable in order to p...
Return Boolean Value on SQL Select Statement
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Error: "Incorrect syntax near the keyword 'EXISTS'." sqlfiddle.com/#!18/ef905/18
– JoePC
Jul 16 '18 at 20:21
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How do I expand a tuple into variadic template function's arguments?
...arguments whose arguments are vectors... ...but I am still getting compile errors. ideone.com/xH5kBH If you compile this with -DDIRECT_CALL and run it, you will see what the output should be. I get a compile error otherwise (I think decltype is not smart enough to figure out my special case), with ...
How to get the current user in ASP.NET MVC
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If you are getting this error 'System.Web.HttpContextBase' does not contain a definition for 'Current' and no extension method 'Current' accepting a first argument of type 'System.Web.HttpContextBase' could be found, I would suggest making an absolu...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...
Linux日志管理Rsyslog入门 - C/C++ - 清泛网移动版 - 专注IT技能提升
.../log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
其中涉及两个概念：Facility和Severity，中文的意思大致...