var list1 = [10, 15, 20,25,25] <\/code><\/pre>\n\n\n\nThe Dart list is defined by storing all elements inside the square bracket ([]) and separated by commas (,).<\/p>\n\n\n\n
Let’s understand the graphical representation of the list –<\/p>\n\n\n\n![\"Dart](\"https:\/\/static.javatpoint.com\/tutorial\/dart\/images\/dart-lists.png\")
<\/figure>\n\n\n\nlist1<\/strong> – It is the list variable<\/strong> that refers to the list object.<\/p>\n\n\n\nIndex –<\/strong> Each element has its index number that tells the element position in the list. The index number is used to access the particular element from the list, such as list_name[index]. The list indexing starts from 0<\/strong> to length-1<\/strong> where length denotes the numbers of the element present in the list. For example, – The length of the above list is 4.<\/p>\n\n\n\nElements –<\/strong> The List elements refers to the actual value or dart object stored in the given list.<\/p>\n\n\n\nTypes of Lists<\/h2>\n\n\n\n
The\u00a0Dart\u00a0list can be categorized into two types –<\/p>\n\n\n\n
- Fixed Length List<\/li>
- Growable List<\/li><\/ul>\n\n\n\n
Fixed Length List<\/h3>\n\n\n\n
The fixed-length lists are defined with the specified length. We cannot change the size at runtime. The syntax is given below.<\/p>\n\n\n\n
Syntax – Create the list of fixed-size<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nvar list_name = new List(size) <\/code><\/pre>\n\n\n\nThe above syntax is used to create the list of the fixed size. We cannot add or delete an element at runtime. It will throw an exception if any try to modify its size.<\/p>\n\n\n\n
The syntax of initializing the fixed-size list element is given below.<\/p>\n\n\n\n
Syntax – Initialize the fixed size list element<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nlist_name[index] = value; <\/code><\/pre>\n\n\n\nLet’s understand the following example.<\/p>\n\n\n\n
Example –<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nvoid main() { \n var list1 = new List(5); \n list1[0] = 10; \n list1[1] = 11; \n list1[2] = 12; \n list1[3] = 13; \n list1[4] = 14; \n print(list1); \n} <\/code><\/pre>\n\n\n\nOutput:<\/strong><\/p>\n\n\n\n[10, 11, 12, 13, 14]\n<\/code><\/pre>\n\n\n\nExplaination –<\/strong><\/p>\n\n\n\nIn the above example, we have created a variable list1<\/strong> that refers the list of fixed size. The size of the list is five and we inserted the elements corresponding to its index position where 0th<\/sup> index holds 10, 1st<\/sup> index holds 12, and so on.<\/p>\n\n\n\nGrowable List<\/h3>\n\n\n\n
The list is declared without specifying size is known as a Growable list. The size of the Growable list can be modified at the runtime. The syntax of the declaring Growable list is given below.<\/p>\n\n\n\n
Syntax – Declaring a List<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\n\/\/ creates a list with values \nvar list_name = [val1, val2, val3] \nOr \n\/\/ creates a list of the size zero \nvar list_name = new List() <\/code><\/pre>\n\n\n\nSyntax – Initializing a List<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nlist_name[index] = value; <\/code><\/pre>\n\n\n\nConsider the following example –<\/p>\n\n\n\n
Example – 1<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nvoid main() { \n var list1 = [10,11,12,13,14,15]; \n print(list1); \n} <\/code><\/pre>\n\n\n\nOutput:<\/strong><\/p>\n\n\n\n[10, 11, 12, 13, 14, 15]\n<\/code><\/pre>\n\n\n\nIn the following example, we are creating a list using the empty list or List()<\/strong> constructor. The add()<\/strong> method is used to add element dynamically in the given list.<\/p>\n\n\n\nExample – 2<\/strong><\/p>\n\n\n\n<\/a><\/a><\/a><\/p>\n\n\n\nvoid main() { \n var list1 = new List(); \n list1.add(10); \n list1.add(11); \n list1.add(12); \n list1.add(13); \n print(list1); \n} <\/code><\/pre>\n\n\n\nOutput:<\/strong><\/p>\n\n\n\n[10, 11, 12, 13]\n<\/code><\/pre>\n\n\n\nList Properties<\/h2>\n\n\n\n
Below are the properties of the list.<\/p>\n\n\n\n