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Scala Iterator toBuffer() method with example

  • Last Updated : 03 Jun, 2019

The toBuffer() method belongs to the concrete value members of the Class AbstractIterator. It is defined in the classes TraversableOnce and GenTraversableOnce. It employs the contents of the stated traversable or iterator to produce a new mutable buffer. It won’t end for infinite-sized collections.

Method Definition: def toBuffer: Buffer[B]

Return Type: It returns a buffer from the stated iterator’s elements.

Example:




// Scala program of toBuffer()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Declaring an iterator
        val iter = Iterator(3, 2, 5, 9)
          
        // Applying toBuffer method
        val result = iter.toBuffer
              
        // Displays output
        println(result)
  
    }
}
Output:



ArrayBuffer(3, 2, 5, 9)

Here, an Array Buffer is returned from the Iterator elements.

Example:




// Scala program of toBuffer()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Declaring an empty-iterator
        val iter = Iterator()
          
        // Applying toBuffer method
        val result = iter.toBuffer
              
        // Displays output
        println(result)
  
    }
}
Output:
ArrayBuffer()

Here, an empty-Array Buffer is returned from an empty Iterator.




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