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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....
Fetch first element which matches criteria
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3 Answers
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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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How do I append text to a file?
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answered Jul 17 '13 at 14:11
Jon KiparskyJon Kiparsky
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Lambda expression to convert array/List of String to array/List of Integers
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130
You could create helper methods that would convert a list (array) of type T to a list (array) o...
Static function variables in Swift
...gt; foo()
$R0: Int = 1
8> foo()
$R1: Int = 2
9> foo()
$R2: Int = 3
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Android: Specify two different images for togglebutton using XML
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edited Nov 13 '12 at 0:01
user901309
answered Oct 7 '09 at 18:37
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How can I get the list of a columns in a table for a SQLite database?
...list of columns in a table. The database is the latest release of SQLite (3.6, I believe). I am looking for code that does this with a SQL query. Extra bonus points for metadata related to the columns (e.g. length, data type, etc...)
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failed to serialize the response in Web API
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answered Nov 27 '13 at 20:02
ZaneZane
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