View bound and context bound in Scala

The <% consciousness in 1.scala is a "view Bounds" (Horizon), which is more widely used and can be implicitly converted, and is a syntactic sugar than <

The following two formulations are equivalent, exactly the same after compilation.

Object Test {  def main (args:array[string]) {  }  def method1[a<% Int] (a:int): Unit ={  }  def method2[ A] (a:int) (implicit b:a=>int): Unit ={  }}

View Code

The definition of Function1 is as follows

2. view bounds Same as context bounds (context defined) is also an implicit parameter of the syntax sugar

Object Test {  def main (args:array[string]) {  }  def Method1[a:list] (a:a): Unit ={  }  def method2 A (A:A) (implicit b:list[a]): Unit ={  }}

Reference:

1.http://www.scala-lang.org/api/2.10.4/#scala. Function1

2.http://hongjiang.info/scala-type-system-view-bounds/

3.http://hongjiang.info/scala-type-system-context-bounds/

View bound and context bound in Scala