List operators (JavaScript)
Lists can be processed as entities by certain operators.
The following operators work on lists:
| Operation | Description |
|---|---|
list1 + list2 |
Returns list1 plus list2. |
list1 - list2 |
Returns list1 minus list2. |
list1 * list2 |
Returns list1 times list2. |
list1 / list2 |
Returns list1 divided bylist2. |
Usage
A list means a multi-value variable such as an array.A list operation processes the corresponding elements of two lists, or each element of one list and a scalar value. The return value is a list.
If two list operands are not the same length, the last element of the shorter list fills out the operation.
Examples
This example adds the corresponding elements of two arrays.function p(stuff) {
print("<<<" + stuff + ">>>");
}
a = new Array(1, 2, 3);
b = new Array(0.1, 0.2, 0.3);
c = a + b;
p(c); // <<<1.1>>>,<<<2.2>>>,<<<3.3>>>
This example adds the corresponding elements of two arrays. The first array is shorter so its last element fills out the operation.
function p(stuff) {
print("<<<" + stuff + ">>>");
}
a = new Array(1, 2, 3);
b = new Array(0.1, 0.2, 0.3, 0.4, 0.5);
c = a + b;
p(c); // <<<1.1>>>,<<<2.2>>>,<<<3.3>>>,<<<3.4>>>,<<<3.5>>>
This example adds a scalar value to each element of an array.
function p(stuff) {
print("<<<" + stuff + ">>>");
}
a = new Array(1, 2, 3);
c = a + 0.01;
p(c); // <<<1.01>>>,<<<2.01>>>,<<<3.01>>>