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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...[T]) else None
}
}
}
scala> Registry.register("a", List(1,2,3))
scala> Registry.get[List[Int]]("a")
res6: Option[List[Int]] = Some(List(1, 2, 3))
scala> Registry.get[List[String]]("a")
res7: Option[List[String]] = None
When storing an element, we store a "Manifest" of it too....
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Prevent automatic browser scroll on refresh
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mrtshermanmrtsherman
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Fastest way to check if a file exist using standard C++/C++11/C?
... return ( access( name.c_str(), F_OK ) != -1 );
}
inline bool exists_test3 (const std::string& name) {
struct stat buffer;
return (stat (name.c_str(), &buffer) == 0);
}
Results for total time to run the 100,000 calls averaged over 5 runs,
Method exists_test0 (ifstream): **0.485s...
Limit ggplot2 axes without removing data (outside limits): zoom
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Hadley explains this on pp. 99; 133 of his ggplot2 book (1st edition), or pp. 160 - 161 if you have the second edition.
The issue is that, as you say, limits inside the scale or setting ylim() causes data to be thrown away, as they are constraining the data...
How do I programmatically shut down an instance of ExpressJS for testing?
...tunately, app.listen returns the server instance.
var server = app.listen(3000);
// listen for an event
var handler = function() {
server.close();
};
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Remote Connections Mysql Ubuntu
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347
To expose MySQL to anything other than localhost you will have to have the following line
Fo...
How do you remove the title text from the Android ActionBar?
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edited May 3 '19 at 9:02
Nilesh Rathod
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Browsers' default CSS for HTML elements
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A GitHub repository of all W3C HTML spec and vendor default CSS stylesheets can be found here
1. Default Styles for Firefox
2. Default Styles for Internet Explorer
3. Default Styles for Chrome / Webkit
4. Default Styles for Opera
5. Default Styles ...
ScalaTest in sbt: is there a way to run a single test without tags?
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This is now supported (since ScalaTest 2.1.3) within interactive mode:
testOnly *MySuite -- -z foo
to run only the tests whose name includes the substring "foo".
For exact match rather than substring, use -t instead of -z.
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