size function:

• Can also be called as count

• Can also be called as length

• Can also be called as len

Get the number of element in an array, the number of keys in an object or the number of characters in a string.

Examples:

• running: (size [1, 2, 3, 4]) will give: 4

• running: (size {"key-1": 1, "key-2": false}) will give: 2

• running: (size "123") will give: 3

• running: (size 50) will return nothing Because 50 is not an array, not an object nor a string.