# 
#  Overview

The **`dart:collection`** library provides advanced collection support for the **Dart** language. The library contains the **`HashSet<E>`** class, which is an unordered hash-table-based implementation of the abstract **`Set<E>`** class. The `HashSet<E>` class contains the **`take()`** method. 
##
## What is the `HashSet.take()` method?

The `take()` method returns a lazy iterable of the first **`count`** number of elements from the hash set. `count` is an argument of the ```take()``` function.

> **Note:** `HashSet<E>` is a collection of unique elements that provides constant-time `add`, `remove`, and `contains` operations. `HashSet<E>` does not have a specified iteration order. However, multiple iterations on the set produce the same element order.

The figure below illustrates how the `take()` method works:

#   
## Syntax
The syntax of the `take()` method is as follows:
```
Iterable<E> take(int count)
```
## Parameters
The `take()` method takes an integer **```count```** as input. It can not be negative.

## Return value
The `take()` method returns the first ```count``` number of elements as a lazy iterable. 

We can get the collection items by going through the iterator until we see the ```count``` elements.

The returned iterable may contain fewer than ```count``` elements if the input collection contains fewer than ```count``` elements.

## Code
The code below shows how the `take()` method works in Dart:


import 'dart:collection'; 
void main() { 
    var countrySet = HashSet<String>();

    countrySet.add("America"); 
    countrySet.add("Japan"); 
    countrySet.add("India");
    countrySet.add("UAE");

    print('Printing Set Elements');
    print(countrySet); 

    var result = countrySet.take(3);
    print('Iterable of length 3 : $result');  
}  

## Explanation

* **Line 3**: We create an instance of a `HashSet` class of type **`String`**.

* **Lines 5 to 8**: We use the `add()` method to add a few country names to the HashSet: `"America"`, `"Japan"`, `"India"`, and `"UAE"`.

* **Line 13**: We call the `take()` method with the `count` passed as **`3`**. This returns an iterable of length `3`, and contains the first three elements of the hash set.

* **Line 14**: We use the **`print()`** function of the core library to display the set elements and the result of the `take()` method.

What is HashSet.take() in Dart?

The `HashSet.take()` method in Dart returns a lazy iterable of the first specified count of unique elements from a hash set.

What is HashSet.take() in Dart?

Overview

What is the HashSet.take() method?

Syntax

Parameters

Return value

Code

Explanation

What is the `HashSet.take()` method?