Get it, thank you!
On Mon, Jul 24, 2017 at 11:50 AM, Reynold Xin wrote:
> This is a standard practice used for chaining, to support
>
> a.setStepSize(..)
> .set setRegParam(...)
>
>
> On Sun, Jul 23, 2017 at 8:47 PM, tao zhan wrote:
>
>> Thank you for replying.
>> But I do not get it complete
This is a standard practice used for chaining, to support
a.setStepSize(..)
.set setRegParam(...)
On Sun, Jul 23, 2017 at 8:47 PM, tao zhan wrote:
> Thank you for replying.
> But I do not get it completely, why does the "this.type“” necessary?
> why could not it be like:
>
> def setStepSize(
Thank you for replying.
But I do not get it completely, why does the "this.type“” necessary?
why could not it be like:
def setStepSize(step: Double): Unit = {
require(step > 0,
s"Initial step size must be positive but got ${step}")
this.stepSize = step
}
On Mon, Jul 24, 2017 at 11:2
Doesn't it mean the return type will be type of "this" class. So, it
doesn't have to be this instance of the class but it has to be type of this
instance of the class. When you have a stack of inheritance and call that
function, it will return the same type with the level that you called it.
On Su
It means the same object ("this") is returned.
On Sun, Jul 23, 2017 at 8:16 PM, tao zhan wrote:
> Hello,
>
> I am new to scala and spark.
> What does the "this.type" in set function for?
>
>
>
> https://github.com/apache/spark/blob/481f0792944d9a77f0fe8b5e2596da
> 1d600b9d0a/mllib/src/main/sca
Hello,
I am new to scala and spark.
What does the "this.type" in set function for?
https://github.com/apache/spark/blob/481f0792944d9a77f0fe8b5e2596da1d600b9d0a/mllib/src/main/scala/org/apache/spark/mllib/optimization/GradientDescent.scala#L48
Thanks!
Zhan
