Modifying An Array

OSL is a 1 indexed scripting language, meaning that arrays start at the index 1 not at 0 like many other languages.

Setting Items Of An Array

You can set or update an item of an array using any way of assignment shown here Variables

arr = ["value1","value2","value3","value4"]

arr[1] = "value5"

log arr
// returns ["value5","value2","value3","value4"]

Setting Nested Items

In osl you can update nested items using multiple stacked references to a part of an object/array that gets compiled into a simple json path.

array = ["data",["data2","data3"]]

array[2][2] = "data4"

log array
// ["data",["data2","data4"]]

Appending And Prepending

To append and prepend to an array, you can not only use the + operator in Array Operations but you can also use the .prepend(val) and .append(val) methods

arr = ["wow"]
// setup the empty array

arr.prepend("hello world")
// i use a method as a command so that it updates the variable
// prepend adds the new value as the first item in the array

log arr
// returns ["hello world","wow"]

arr = ["wow"]
// setup the empty array

arr.append("hello world")
// i use a method as a command so that it updates the variable
// prepend adds the new value as the last item in the array

log arr
// returns ["wow","hello world"]

Delete An Item Of An Array

To remove an item from an array, you can use either the .delete(location) method or .pop() to remove the last item, or .shift() to remove the first item.