Lists

यादी

A list is an ordered collection written in square brackets. Items can be of any kind, including other lists.

lists.mr

चल फळे = ["आंबा", "केळी", "पेरू"]
चल मिश्र = [1, "दोन", खरे, [3, 4]]
चल रिकामी = []
छापा(फळे)
छापा(मिश्र)
छापा(लांबी(रिकामी))

Output (आउटपुट)

["आंबा", "केळी", "पेरू"]
[1, "दोन", खरे, [3, 4]]
0

When a list is printed, strings inside it are shown in quotes.

Nested lists

nested.mr

चल x = [[1, 2], [3, 4]]
छापा(x[1][0])
छापा(लांबी(x))
छापा(लांबी(x[0]))

Output (आउटपुट)

3
2
2

Operation	Result
a + b	A new list with the items of a followed by the items of b
a == b	खरे when both have the same items in the same order
लांबी(a)	Number of items
जोडा(a, item)	Adds item to the end of a
a[i], a[i] = v	Read or replace an item; see Indexing

list_ops.mr

चल a = [1, 2]
चल b = a + [3]
छापा(b)
छापा(a == [1, 2])
जोडा(a, 99)
छापा(a)

Output (आउटपुट)

[1, 2, 3]
खरे
[1, 2, 99]

Assigning a list to another variable, or passing it to a function, does not copy it. Both names refer to the same list:

shared.mr

चल मूळ = [1, 2]
चल दुसरी = मूळ
दुसरी[0] = 100
छापा(मूळ)

Output (आउटपुट)

[100, 2]