A view of the elements of array from index on, or of count of them from index.
The view shares the array's memory, so writes through it change the array, and it is only good while the
array is not freed or grown. It is clamped, not an error, to run past the end: a count that is too large
is cut short, and an index at or beyond the end gives an empty view. A negative index or count fails
an assert.
values := int.[1, 2, 3, 4, 5];
middle := array_view(values, 1, 3);
assert(middle.count == 3 && middle[0] == 2);
tail := array_view(values, 3);
assert(tail.count == 2 && tail[1] == 5);
middle[0] = 20; // writes into `values`
assert(values[1] == 20);
assert(array_view(values, 9).count == 0);array_view :: (array: [] $T, index: int) -> [] TA view of the elements of array from index on, or of count of them from index.
The view shares the array's memory, so writes through it change the array, and it is only good while the
array is not freed or grown. It is clamped, not an error, to run past the end: a count that is too large
is cut short, and an index at or beyond the end gives an empty view. A negative index or count fails
an assert.
Parameters
- array: [] $T
- index: int
Returns
- [] T
values := int.[1, 2, 3, 4, 5];
middle := array_view(values, 1, 3);
assert(middle.count == 3 && middle[0] == 2);
tail := array_view(values, 3);
assert(tail.count == 2 && tail[1] == 5);
middle[0] = 20; // writes into `values`
assert(values[1] == 20);
assert(array_view(values, 9).count == 0);array_view :: (array: [] $T, index: int, count: int) -> [] TAt most count elements from index; see the first array_view for the clamping rules.
Parameters
- array: [] $T
- index: int
- count: int
Returns
- [] T