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# Scala Set map() method with example

• Last Updated : 18 Oct, 2019

The map() method is utilized to build a new set by applying a function to all elements of this set.

Method Definition: def map[B](f: (A) => B): immutable.Set[B]

Return Type: It returns a new set containing all the elements after applying the given function.

Example #1:

 `// Scala program of map() ``// method `` ` `// Creating object ``object` `GfG ``{ `` ` `    ``// Main method ``    ``def` `main(args``:``Array[String]) ``    ``{ ``        ``// Creating a set ``        ``val` `s``1` `=` `Set(``5``, ``1``, ``3``, ``2``, ``4``) ``         ` `        ``// Applying map method ``        ``val` `result ``=` `s``1``.map(x ``=>` `x*x)``         ` `        ``// Display output``        ``println(result)``    ``} ``} `
Output:
```Set(25, 1, 9, 16, 4)
```

Example #2:

 `// Scala program of map() ``// method `` ` `// Creating object ``object` `GfG ``{ `` ` `    ``// Main method ``    ``def` `main(args``:``Array[String]) ``    ``{ ``        ``// Creating a set ``        ``val` `s``1` `=` `Set(``5``, ``1``, ``3``, ``2``, ``4``) ``         ` `        ``// Applying map method ``        ``val` `result ``=` `s``1``.map(x ``=>` `x/``2``)``         ` `        ``// Display output``        ``println(result)``    ``} ``} `
Output:
```Set(2, 0, 1)
```

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