# DSL operators ## Operator precedence Operators are listed in order of decreasing precedence, highest first. 
Operators              Associativity
---------              -------------
()                     left to right
**                     right to left
! ~ unary+ unary- &    right to left
binary* / // %         left to right
binary+ binary- .      left to right
<< >> >>>              left to right
&                      left to right
^                      left to right
|                      left to right
< <= > >=              left to right
== != =~ !=~           left to right
???
??
&&                     left to right
^^                     left to right
||                     left to right
? :                    right to left
=                      N/A for Miller (there is no $a=$b=$c)
## Operator and function semantics * Functions are often pass-throughs straight to the system-standard Go libraries. * The [`min`](reference-dsl-builtin-functions.md#min) and [`max`](reference-dsl-builtin-functions.md#max) functions are different from other multi-argument functions which return null if any of their inputs are null: for [`min`](reference-dsl-builtin-functions.md#min) and [`max`](reference-dsl-builtin-functions.md#max), by contrast, if one argument is absent-null, the other is returned. Empty-null loses min or max against numeric or boolean; empty-null is less than any other string. * Symmetrically with respect to the bitwise OR, XOR, and AND operators [`|`](reference-dsl-builtin-functions.md#bitwise-or), [`&`](reference-dsl-builtin-functions.md#bitwise-and), and [`^`](reference-dsl-builtin-functions.md#bitwise-xor), Miller has logical operators [`||`](reference-dsl-builtin-functions.md#logical-or), [`&&`](reference-dsl-builtin-functions.md#logical-and), and [`^^`](reference-dsl-builtin-functions.md#logical-xor). * The exponentiation operator [`**`](reference-dsl-builtin-functions.md#exponentiation) is familiar from many languages, except that an integer raised to an int power is int, not float. * The regex-match and regex-not-match operators [`=~`](reference-dsl-builtin-functions.md#regmatch) and [`!=~`](reference-dsl-builtin-functions.md#regnotmatch) are similar to those in Ruby and Perl.