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Extract hostname name from string
...);
; tmp.href = "http://www.example.com/12xy45";
// tmp.hostname will now contain 'www.example.com'
// tmp.host will now contain hostname and port 'www.example.com:80'
Wrap the above in a function such as the below and you have yourself a superb way of snatching the domain part out of an URI....
How efficient is locking an unlocked mutex? What is the cost of a mutex?
... itself manages the scheduling and context switches, this makes sense. But now I have a rough imagination about what the mutex lock/unlock will do internally.
– Albert
Sep 6 '10 at 21:55
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How to download a file with Node.js (without using third-party libraries)?
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the callback is confusing me. if I now invoke download(), how would I do it? What would I place as the cb argument? I have the download('someURI', '/some/destination', cb) but don't understand what to put in the cb
– Abdul
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Gitignore not working
...m your system use: git rm --cached filename
To untrack every file that is now in your .gitignore:
First commit any outstanding code changes, and then, run this command:
git rm -r --cached .
This removes any changed files from the index(staging area), then just run:
git add .
Commit it:
git ...
How to open an elevated cmd using command line for Windows?
...%cd%\" -Verb RunAs"
Move sudo.bat to a folder in your PATH; if you don't know what that means, just move these files to c:\windows\
Now sudo will work in Run dialog (win+r) or in explorer address bar (this is the best part :))
Method 2: WITH a 3rd party program
Download NirCmd and unzip it.
Cre...
How to resolve “Waiting for Debugger” message?
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Prior to today I never had to do this, but now I have to. I must have changed a setting accidentally. But which?
– Eurig Jones
Feb 16 '17 at 15:02
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How can I install an older version of a package via NuGet?
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This should now be the accepted answer as its the best solution with minimal effort.
– Peter
Oct 24 '14 at 7:53
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Why can't I overload constructors in PHP?
...being able to overload my constructors in PHP, so what I'd really like to know is why .
14 Answers
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Elegant way to check for missing packages and install them?
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@MERose pacman is now on CRAN cran.r-project.org/web/packages/pacman/index.html
– Tyler Rinker
Feb 17 '15 at 17:48
6
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What is pseudopolynomial time? How does it differ from polynomial time?
...then it will take some worst-case amount of time, say T, to complete. If I now add a single bit to the end of the number, like this:
100010101010111
The runtime will now (in the worst case) be 2T. I can double the amount of work the algorithm does just by adding one more bit!
An algorithm run...