How to Work With Lists In Groovy?

7 minutes read

Working with lists in Groovy is very convenient and easy. You can create a list using square brackets [] and add items to it using the add() method or the << operator. You can access individual items in a list using their index, starting from 0. You can also iterate over a list using for loops or the each() method. Groovy provides many built-in methods for manipulating lists, such as sorting, filtering, and mapping. Overall, working with lists in Groovy is a simple and efficient process.

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What is the difference between accessing elements by index and by value in a list in Groovy?

In Groovy, accessing elements by index means using the numerical position of an element in a list to retrieve its value. For example, list[0] would retrieve the value of the first element in the list.


Accessing elements by value means searching for a specific value within the list and returning its index. This can be done using methods like indexOf() or find() in Groovy. For example, list.indexOf("value") would return the index of the element with the value "value" in the list.


What is a list in Groovy?

A list in Groovy is an ordered collection of elements, similar to an array in other programming languages. It can contain elements of any type, including numbers, strings, objects, and even other lists. Lists in Groovy are mutable, meaning that elements can be added, removed, or modified after the list is created. Lists in Groovy are represented by square brackets [].


How to convert a list to an array in Groovy?

In Groovy, you can easily convert a list to an array using the toArray() method. Here is an example:

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def list = [1, 2, 3, 4, 5]
def array = list.toArray()

// Print the array
println array


In this example, the toArray() method is called on the list variable to convert it to an array. You can then use the array variable to access the elements in the array.

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