Operators

Arithmetic Operators

Operator	Description	Example
+	Addition	a + b
-	Subtraction	a - b
*	Multiplication	a * b
/	Division	a / b
%	Modulo	a % b
**	Power	a ** b
- (unary)	Negation	-a

Comparison Operators

Operator	Description	Example
==	Equality	a == b
!=	Inequality	a != b
<	Less than	a < b
<=	Less than or equal	a <= b
>	Greater than	a > b
>=	Greater than or equal	a >= b

Logical Operators

Operator	Description	Example
and	Logical AND	a and b
or	Logical OR	a or b
not	Logical NOT	not a

Bitwise Operators

Operator	Description	Example
&	Bitwise AND	a & b
|	Bitwise OR	a | b
^	Bitwise XOR	a ^ b
~	Bitwise NOT	~a
<<	Left shift	a << 2
>>	Right shift	a >> 2

Assignment Operators

Operator	Description	Example
:=	Assignment	x := 5

Chaining Operators

Operator	Description	Example
.	Member access / chaining	stream.where(...).select(...)
?.	Optional access	user?.name
??	Null coalesce	value ?? default

Collection Operators

Operator	Description	Example
[]	Indexing	array[0]
[:]	Slice	array[1:3]
in	Membership	x in list
not in	Non-membership	x not in list

Range Operators

Operator	Description	Example
..	Exclusive range	0..10 (0 to 9)
..=	Inclusive range	0..=10 (0 to 10)

Lambda Operators

Operator	Description	Example
=>	Lambda expression	x => x * 2
->	Return type	fn add(a: int, b: int) -> int

SASE+ Pattern Mode Operators

Stream-level operators that control how SASE+ patterns produce matches. See SASE+ Patterns Guide for details.

Selection strategy (how runs are spawned)

Operator	Description	Example
.strict()	Strict contiguity — events must be adjacent	stream X = A -> B.strict().emit(...)
.stnm()	Skip-till-next-match — non-overlapping maximal matches	stream X = A -> B.stnm().emit(...)
.stam()	Skip-till-any-match — overlapping runs (default)	stream X = A -> B.stam().emit(...)

Emission mode (how matches are produced)

Operator	Description	Example
.each()	Emit one match per Kleene event extension (default)	stream X = all B as b .each().emit(...)
.longest()	Emit one consolidated match at terminator/break	stream X = all B as b .longest().emit(...)
.subsets()	Emit 2^N − 1 matches (paper-correct STAM verbose, expert mode)	stream X = all B as b .subsets().emit(...)

Monotonic pattern shortcuts

Operator	Description	Example
.increasing(field)	Sugar for where field > self.field Kleene+; auto-implies .longest()	all TempReading.increasing(temperature) as rising
.decreasing(field)	Sugar for where field < self.field Kleene+; auto-implies .longest()	all Sensor.decreasing(pressure) as falling

Duration Operators

# Duration suffixes
5s      # 5 seconds
10m     # 10 minutes
2h      # 2 hours
1d      # 1 day
500ms   # 500 milliseconds
100us   # 100 microseconds
50ns    # 50 nanoseconds

Operator Precedence (highest to lowest)

1. (), [], ., ?.
2. **
3. - (unary), not, ~
4. *, /, %
5. +, -
6. <<, >>
7. &
8. ^
9. |
10. <, <=, >, >=, ==, !=, in, not in
11. and
12. or
13. ??
14. :=