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Operator Reference

Complete list of WFL operators with precedence and examples.

Arithmetic Operators

Operator Natural Language Symbol Example Result
Addition plus + 5 plus 3 8
Subtraction minus - 10 minus 4 6
Multiplication times * 6 times 7 42
Division divided by / 20 divided by 4 5
Modulo modulo % 10 % 3 1

Examples:

store sum as 5 plus 3                    // 8
store difference as 10 minus 4           // 6
store product as 6 times 7               // 42
store quotient as 20 divided by 4        // 5
store remainder as 10 % 3                // 1

Comparison Operators

Operator Natural Language Example
Equal is equal to, is x is 5
Not Equal is not equal to, is not x is not 5
Greater Than is greater than x is greater than 5
Greater or Equal is greater than or equal to x is greater than or equal to 5
Less Than is less than x is less than 5
Less or Equal is less than or equal to x is less than or equal to 5
Above is above x is above 5
Below is below x is below 5
In range is between A and B x is between 1 and 10

is between A and B is an inclusive range check — it is exactly equivalent to writing x is greater than or equal to A and x is less than or equal to B.

Examples:

check if age is equal to 18:
check if age is 18:                      // Shorthand
check if age is not 21:
check if score is greater than 90:
check if temperature is above 30:
check if age is between 18 and 65:       // inclusive range

Logical Operators

Operator Example Description
and a and b Both must be true
or a or b At least one true
not not a Negation

Examples:

check if age is greater than 18 and has_license is yes:
check if is_weekend is yes or is_holiday is yes:
check if not is_raining:

Precedence:

  1. not (highest)
  2. and
  3. or (lowest)

String Operator

Operator Example Result
with "Hello" with " World" "Hello World"

Examples:

display "Name: " with name
store full_name as first_name with " " with last_name

Order of Operations

Precedence (highest to lowest):

  1. Parentheses (when supported)
  2. Multiplication, Division, Modulo (left to right)
  3. Addition, Subtraction (left to right)
  4. Comparison (is, greater than, etc.)
  5. Logical NOT
  6. Logical AND
  7. Logical OR

Examples:

2 plus 3 times 4              // 14 (not 20)
// = 2 + (3 * 4) = 2 + 12 = 14

10 minus 2 times 3            // 4 (not 24)
// = 10 - (2 * 3) = 10 - 6 = 4

Best practice: Use intermediate variables for clarity:

store step1 as 3 times 4      // 12
store result as 2 plus step1  // 14

Associativity

All operators are left-to-right:

10 minus 5 minus 2            // 3
// = (10 - 5) - 2 = 5 - 2 = 3

8 divided by 4 divided by 2   // 1
// = (8 / 4) / 2 = 2 / 2 = 1

Special Operators

Access Operators

container.property            // Property access
container.action()            // Method call
list[0]                       // Index access

Type Operators

typeof of value               // Type checking
value matches pattern         // Pattern matching

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