Ink by Example

Ink by Example: Lists

Lists and maps share the same data structure — the composite value. At runtime, lists are hashmaps with string keys representing indices.
	std := load('../vendor/std') log := std.log reverse := std.reverse slice := std.slice range := std.range each := std.each join := std.join
Lists can be declared with array syntax.	names := ['Alice', 'Andrew'] log(names)
To access or mutate an element we use the dot syntax.	log(names.0) `` first element log(names.(len(names) - 1)) `` last element names.0 := 'Madeline' log(names)
Like strings, we can append to the end of a list by mutating the next index value.	names.len(names) := 'Francisca' log(names)
	indexer := (name, index) => ( log(index) log(name) ) each(names, indexer)
`std.range` works similar to Python's `range`. It takes start, end, and step values and returns a list.	numbers := range(0, 6, 1) log(numbers)
We can get a sublist with `std.slice`, and join two lists to create a third with `std.join`.	half := slice(numbers, 0, 3) log(half) first := [98, 99] second := [100, 101] third := join(first, second) log(third)
To reverse, use `std.reverse`. For other list utilities, refer to the standard library.	log(reverse(['one', 'two', 'three', ]))

$ ink lists.ink
{0: 'Alice', 1: 'Andrew'}
Alice
Andrew
{0: 'Madeline', 1: 'Andrew'}
{0: 'Madeline', 1: 'Andrew', 2: 'Francisca'}
0
Madeline
1
Andrew
2
Francisca
{0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5}
{0: 0, 1: 1, 2: 2}
{0: 98, 1: 99, 2: 100, 3: 101}
{0: 'three', 1: 'two', 2: 'one'}

Next example: Maps.