Implicit conversion in Scala Insider operating rules disclosure, best practices and their application in spark source parsing Scala learning notes-55

Package Com.leegh.implicits

Import Scala.io.Source
Import Java.io.File

/**
* @author Guohui Li
*/
Class Richerfile (Val file:file) {
def read = Source.fromfile (File.getpath). mkstring
}

Class File_implicits (path:string) extends File (path)
Associated objects
Object File_implicits {
Implicit def file2richfile (file:file) = new Richerfile (file)
}
The compiler performs a discovery file_implicits does not have a read method, and the context does not have an implicit import. See if the associated object of file_implicits is implicit conversion.
Implicit keyword, the parameter type matching, found that richerfile receive the same parameters, there is a read method
Object Implicits_internals {
def main (args:array[string]): Unit = {
println (New File_implicits ("E:\\leegh.txt"). Read)
}
}

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Implicit conversion in Scala Insider operating rules disclosure, best practices and their application in spark source parsing Scala learning notes-55