Re: Number of elements in ArrayBuffer
You really should show your Spark code then. I think you are mistaking one of the Spark APIs, and are processing a collection of 1 ArrayBuffer at some point, not an ArrayBuffer. On Wed, Sep 3, 2014 at 6:42 AM, Deep Pradhan pradhandeep1...@gmail.com wrote: I have a problem here. When I run the commands that Rajesh has suggested in Scala REPL, they work fine. But, I want to work in a Spark code, where I need to find the number of elements in an ArrayBuffer. In Spark code, these things are not working. How should I do that? On Wed, Sep 3, 2014 at 10:25 AM, Madabhattula Rajesh Kumar mrajaf...@gmail.com wrote: Hi Deep, Please find below results of ArrayBuffer in scala REPL scala import scala.collection.mutable.ArrayBuffer import scala.collection.mutable.ArrayBuffer scala val a = ArrayBuffer(5,3,1,4) a: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(5, 3, 1, 4) scala a.head res2: Int = 5 scala a.tail res3: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(3, 1, 4) scala a.length res4: Int = 4 Regards, Rajesh On Wed, Sep 3, 2014 at 10:13 AM, Deep Pradhan pradhandeep1...@gmail.com wrote: Hi, I have the following ArrayBuffer: ArrayBuffer(5,3,1,4) Now, I want to get the number of elements in this ArrayBuffer and also the first element of the ArrayBuffer. I used .length and .size but they are returning 1 instead of 4. I also used .head and .last for getting the first and the last element but they also return the entire ArrayBuffer (ArrayBuffer(5,3,1,4)) What I understand from this is that, the entire ArrayBuffer is stored as one element. How should I go about doing the required things? Thank You - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
Re: Number of elements in ArrayBuffer
Hi Deep, Please find below results of ArrayBuffer in scala REPL scala import scala.collection.mutable.ArrayBuffer import scala.collection.mutable.ArrayBuffer scala val a = ArrayBuffer(5,3,1,4) a: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(5, 3, 1, 4) scala a.head res2: Int = 5 scala a.tail res3: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(3, 1, 4) scala a.length res4: Int = 4 Regards, Rajesh On Wed, Sep 3, 2014 at 10:13 AM, Deep Pradhan pradhandeep1...@gmail.com wrote: Hi, I have the following ArrayBuffer: *ArrayBuffer(5,3,1,4)* Now, I want to get the number of elements in this ArrayBuffer and also the first element of the ArrayBuffer. I used .length and .size but they are returning 1 instead of 4. I also used .head and .last for getting the first and the last element but they also return the entire ArrayBuffer (ArrayBuffer(5,3,1,4)) What I understand from this is that, the entire ArrayBuffer is stored as one element. How should I go about doing the required things? Thank You
Re: Number of elements in ArrayBuffer
I have a problem here. When I run the commands that Rajesh has suggested in Scala REPL, they work fine. But, I want to work in a Spark code, where I need to find the number of elements in an ArrayBuffer. In Spark code, these things are not working. How should I do that? On Wed, Sep 3, 2014 at 10:25 AM, Madabhattula Rajesh Kumar mrajaf...@gmail.com wrote: Hi Deep, Please find below results of ArrayBuffer in scala REPL scala import scala.collection.mutable.ArrayBuffer import scala.collection.mutable.ArrayBuffer scala val a = ArrayBuffer(5,3,1,4) a: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(5, 3, 1, 4) scala a.head res2: Int = 5 scala a.tail res3: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer(3, 1, 4) scala a.length res4: Int = 4 Regards, Rajesh On Wed, Sep 3, 2014 at 10:13 AM, Deep Pradhan pradhandeep1...@gmail.com wrote: Hi, I have the following ArrayBuffer: *ArrayBuffer(5,3,1,4)* Now, I want to get the number of elements in this ArrayBuffer and also the first element of the ArrayBuffer. I used .length and .size but they are returning 1 instead of 4. I also used .head and .last for getting the first and the last element but they also return the entire ArrayBuffer (ArrayBuffer(5,3,1,4)) What I understand from this is that, the entire ArrayBuffer is stored as one element. How should I go about doing the required things? Thank You
