Not Null Guide

Not Null

Feature Overview

This feature guards that method parameters cannot be null.

Prerequisite

None

Sweet Apex Example

public class NotNullDemo {
    public static Integer add(
        @notNull Integer a,
        Integer b!
    ) {
        return a + b;
    }
}

Transpiled Apex

public class NotNullDemo {
    public static Integer add(Integer a, Integer b) {
        Sweet.assertNotNull(a, '"a" in NotNullDemo.add(Integer, Integer) should not be null');
        Sweet.assertNotNull(b, '"b" in NotNullDemo.add(Integer, Integer) should not be null');

        return a + b;
    }
}

Usage

@notNull can only be used on method parameters.

Or you can append ! after the parameter variable.

Contribute on Github! Edit this section.