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How to count the number of set bits in a 32-bit integer?
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This is known as the 'Hamming Weight', 'popcount' or 'sideways addition'.
The 'best' algorithm really depends on which CPU you are on and what your usage pattern is.
Some CPUs have a single built-in instruction to do it and others hav...
How to import multiple .csv files at once?
...mp<-list.files(pattern="*.csv") ddives <- lapply(temp, read.csv) So now each file is called ddives[n] but how would I go about writing a loop to make them all data frames rather than single objects? I can achieve this individually using the data.frame operator but am unsure as to how to loop ...
INNER JOIN vs LEFT JOIN performance in SQL Server
... LEFT JOIN because the performance of LEFT JOIN is better, despite what I know. After I changed it, the speed of query got significantly improved.
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How to get a list of all valid IP addresses in a local network? [closed]
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Per the man page "In newer releases of nmap, -sP is known as -sn". If the wildcard is not working, you can try something like nmap -sn 192.168.1.0/24 or nmap -sn 192.168.1.100-199
– Stickley
Aug 10 '16 at 19:19
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How to write a cron that will run a script every day at midnight?
...-day.sh")
sleep 1d - means it waits for one day and then it runs again.
now give the permission to your script.use below command:-
chmod +x every-day.sh
now, execute this shell script in the background by using "nohup".
This will keep executing the script even after you logout from your session...
URL Encoding using C#
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Edit: Note that this answer is now out of date. See Siarhei Kuchuk's answer below for a better fix
UrlEncoding will do what you are suggesting here. With C#, you simply use HttpUtility, as mentioned.
You can also Regex the illegal characters and then re...
What do Clustered and Non clustered index actually mean?
...osure to DB and have only used DB as an application programmer. I want to know about Clustered and Non clustered indexes .
I googled and what I found was :
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How can I declare optional function parameters in Javascript? [duplicate]
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With ES6: This is now part of the language:
function myFunc(a, b = 0) {
// function body
}
Please keep in mind that ES6 checks the values against undefined and not against truthy-ness (so only real undefined values get the default value ...
Is proprietary code legally safe on bitbucket or github? [closed]
I know this slightly in the legal realm but its unclear who owns the code if you put proprietary code on github or bitbucket in a private repository.
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Unix - copy contents of one directory to another [closed]
And now Folder2/ looks like:
3 Answers
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