Operators are mathematical and logical words and symbols you can use in an expression. The operators are each described in detail later in this section. For reference, they are listed here by category.
On this page:
Mathematical Operators
| Operator | Behavior |
|---|---|
| +, plus | addition |
| -, minus | subtraction |
| *, times, multiplied by |
multiplication |
| /, divided by |
division |
| ^ | exponentiation (raise to a power) |
| squared | raise to the second power |
| to the power of | raise to the power specified |
| cubed | raise to the third power |
| %, percent | percent |
| div | integer division |
| rem | integer remainder |
| modulo, mod | mathematical modulo |
| is a multiple of, is divisible by | test for exact multiple of a number |
| rounded to | round to a number of decimal places |
| rounded to nearest | round to the nearest multiple of a value |
Comparison Operators
| Operator | Behavior |
|---|---|
|
= is are equals equal to does equal are equal the same |
Equal. See Comparison Operators for more details. |
|
<> is not are not does not equal is not equal to isn't aren't doesn't equal isn't equal to |
Not equal. See Comparison Operators for more details. |
|
< is less than comes before is earlier than is not greater than or equal to |
Less than. See Comparison Operators for more details. |
|
> is greater than is more than comes after is later than is past is not less than or equal to |
Greater than. See Comparison Operators for more details. |
|
<= is less than or equal to does not come after is not greater than is not later than is not past is at most is no more than |
Less than or equal to. See Comparison Operators for more details. |
|
>= is greater than or equal to does not come before is not less than is not earlier than is at least is no less than |
Greater than or equal to. See Comparison Operators for more details. |
|
between is between is not between comes between does not come between |
Tests whether a value is within a range of values. See Comparison Operators for more details. |
Logical Operators
| Operator | Behavior |
|---|---|
| and | logical and |
| and if | short-circuit logical and |
| or | logical inclusive or |
| or if | short-circuit logical inclusive or |
| not | logical negation |
Text Operators
| Operator | Behavior |
|---|---|
|
& |
Text string concatenation. See Text Operators for more details. |
|
&& |
Text concatenation with space inserted. See Text Operators for more details. |
|
is in is contained by is not in isn't in |
One string contained in another, or value contained in a list. See Text Operators for more details. |
|
contains does not contain doesn't contain |
One string contains another, or value contained in a list. See Text Operators for more details. |
|
is among is not among isn't among |
One value is present among the chunks, items, keys or values of another. See Text Operators for more details. |
|
begins with does not begin with doesn't begin with |
One string begins with another, or list begins with a value or sublist. See Text Operators for more details. |
|
ends with does not end with doesn't end with |
One string ends with another, or list ends with a value or sublist. See Text Operators for more details. |
Property List Operators
| Operator | Behavior |
|---|---|
|
add properties from one property list to those from another |
|
|
add properties from one property list to those from another, overriding duplicates |
|
|
remove specified properties from a property list |
|
|
remove properties from a property list, other than those specified |
Date Operators
| Operator | Behavior |
|---|---|
|
time prior to now |
|
|
time later than now |
Miscellaneous Operators
| Operator | Behavior |
|---|---|
|
grouping |
|
|
tests for types (number, integer, point, rect, date, logical, color) |
|
|
yields true if the specified object or file exists |
|
|
yields true if the specified object or file exists |
|
|
tests whether a point or rectangle is within a rectangle |
|
|
list concatenation |
|
|
converts a list or property list to text |
|
|
converts text to a list or property list |
|
|
converts a value to a given internal representation |
|
|
selector expression |
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