Arrays

Instance methods on arrays.

Methods

Method	Returns	Description
`len()`	`int`	Element count
`push(val)`		Append element
`pop()`	`int`	Remove and return last
`slice(start, end)`	`array`	Sub-array
`reverse()`	`array`	Reversed copy
`join(sep)`	`string`	Join with separator
`index_of(val)`	`int`	Find element (-1 if missing)
`remove(idx)`		Remove at index
`insert(idx, val)`		Insert at index
`unique()`	`array`	Deduplicated copy
`concat(other)`	`array`	Concatenate arrays
`any(fn)`	`int`	Any element matches (1/0)
`all(fn)`	`int`	All elements match (1/0)
`map(fn)`	`array`	Transform elements
`filter(fn)`	`array`	Filter elements
`reduce(fn, init)`	`int`	Fold elements
`sort_by(cmp_fn)`		Sort with comparator

Examples

wyn

var nums = [1, 2, 3, 4, 5]
nums.push(6)
println(nums.len().to_string())     // 6
println(nums.join(", "))            // 1, 2, 3, 4, 5, 6

Functional

wyn

var doubled = [1, 2, 3].map(fn(x) => x * 2)        // [2, 4, 6]
var big = [1, 2, 3, 4, 5].filter(fn(x) => x > 3)   // [4, 5]

Comprehensions

wyn

var squares = [x * x for x in 0..10]
var evens = [x for x in 0..20 if x % 2 == 0]