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Scala Iterator exists() method with example

The exists() method belongs to the concrete value members of the class Abstract Iterator. It is defined in the class IterableOnceOps. It tests whether the used predicate holds for at least one element of the stated collection. It will not terminate for infinite sized collection.

Method Definition : def exists(p: (A) => Boolean): Boolean

Where, p is the predicate.

Return Type : It returns true if the given predicate p is satisfied by at least one element of the stated collection, else it returns false.

Example #1:

 `// Scala program of exists()``// method`` ` `// Creating object``object` `GfG``{ `` ` `    ``// Main method``    ``def` `main(args``:``Array[String])``    ``{``     ` `        ``// Creating an Iterator ``        ``val` `iter ``=` `Iterator(``7``, ``3``, ``4``, ``11``, ``13``)``         ` `        ``// Applying exists method``        ``val` `result ``=` `iter.exists(x ``=>` `{x ``%` `2` `==` `0``})``         ` `        ``// Displays output``        ``println(result)``     ` `    ``}``}`

Output:

```true
```

Example #2:

 `// Scala program of exists()``// method`` ` `// Creating object``object` `GfG``{ `` ` `    ``// Main method``    ``def` `main(args``:``Array[String])``    ``{``     ` `        ``// Creating an Iterator ``        ``val` `iter ``=` `Iterator(``7``, ``3``, ``5``, ``11``, ``13``)``         ` `        ``// Applying exists method``        ``val` `result ``=` `iter.exists(x ``=>` `{x ``%` `2` `==` `0``})``         ` `        ``// Displays output``        ``println(result)``         ` `    ``}``}`

Output:

```false
```

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