- (minus)

Usage

-- Lingo syntax 
(Negation): -expression 
(Subtraction): expression1 - expression2 
 
// JavaScript syntax 
(Negation): -expression 
(Subtraction): expression1 - expression2

Description

Math operator; when used for negation, - (minus) reverses the sign of the value of expression; when used for subtraction, - (minus) performs an arithmetic subtraction on two numerical expressions, subtracting expression2 from expression1.

When used for negation, - (minus) is an arithmetic operator with a precedence level of 5.

When used for subtraction, both expressions are integers, the difference is an integer. When either or both expressions are floating-point numbers, the difference is a floating‑point number. The ‑ (minus) operator is an arithmetic operator with a precedence level of 3.

Example

(Negation): This statement reverses the sign of the expression 2 + 3:

-- Lingo syntax 
put(-(2 + 3)) 
 
// JavaScript syntax 
put(-(2 + 3));

The result is -5.

(Subtraction): This statement subtracts the integer 2 from the integer 5 and displays the result in the Message window:

-- Lingo syntax 
put(5 - 2) 
 
// JavaScript syntax 
put(5 - 2);

The result is 3, which is an integer.

(Subtraction): This statement subtracts the floating-point number 1.5 from the floating-point number 3.25 and displays the result in the Message window:

-- Lingo syntax 
put(3.25 - 1.5) 
 
// JavaScript syntax 
put(3.25 - 1.5);

The result is 1.75, which is a floating-point number.