Language Guide

CHAPTER 3

Values

52 Value Class Deﬁnitions

You cannot use the Relative, Name, ID, or Filter reference forms. For example,

the following reference, which uses the Filter reference form on a list, is

not valid.

the items in {"this", "is", "a", "list"} whose first 

character is "t"

--result: not a valid reference

COERCIONS SUPPORTED

AppleScript supports coercion of a single-item list to any value class to which

the item can be coerced if it is not part of a list.

AppleScript also supports coercion of an entire list to a string if all items in the

list can be coerced to a string. The resulting string concatenates all the items:

{5, "George", 11.43, "Bill"} as string

--result: "5George11.43Bill"

Individual items in a list can be of any value class, and AppleScript supports

coercion of any value to a list that contains a single item. Concatenated values

of any class can also be coerced to a list:

5 & "George" & 11.43 & "Bill" as list

--result: {5, "George", 11.43, "Bill"}

NOTES

To merge or add values to lists, use the concatenation operator (&). For example,

{"This"} & {"is", "a", "list"}

results in

{"This", "is", "a", "list"}

Note that the concatenation operator merges the items of the two lists into a

single list rather than making one list a value within the other list.