Comparison Operators
Comparison operators in DataLogic-rs perform value comparisons and return boolean results.
Overview
DataLogic-rs provides various comparison operators that you can use to compare values and make decisions based on those comparisons. These operators return boolean values (true or false) and can be used in conjunction with control flow operators to create complex logical rules.
Use the chips below to navigate to specific operators:
== (Equal)
Tests if two values are equal, with type coercion.
Syntax
{ "==": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
Note: The == operator does type coercion, so the string "1" and number 1 are considered equal.
=== (Strict Equal)
Tests if two values are strictly equal, without type coercion.
Syntax
{ "===": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
Note: The === operator does NOT perform type coercion, so the string "1" and number 1 are not considered equal.
> (Greater Than)
Tests if the first value is greater than the second value.
Syntax
{ ">": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
!= (Not Equal)
Tests if two values are not equal, with type coercion.
Syntax
{ "!=": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
Note: The != operator does type coercion, so the string "1" and number 1 are considered equal, thus not unequal.
!== (Strict Not Equal)
Tests if two values are not strictly equal, without type coercion.
Syntax
{ "!==": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
Note: The !== operator does NOT perform type coercion, so the string "1" and number 1 are considered different types and thus not equal.
>= (Greater Than or Equal)
Tests if the first value is greater than or equal to the second value.
Syntax
{ ">=": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
< (Less Than)
Tests if the first value is less than the second value.
Syntax
{ "<": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |
Example
Rule:
Data:
Result:
<= (Less Than or Equal)
Tests if the first value is less than or equal to the second value.
Syntax
{ "<=": [value1, value2] }Parameters
| Parameter | Description |
|---|---|
| value1 | First value for comparison |
| value2 | Second value for comparison |