Var Guide

Feature Overview

This feature infers variable types according to the context.

Prerequisite

None

Sweet Apex Example

public class VarDemo {
    public static void main() {
        var t = 'String';
        var size = t.length();
        var str = t.toString();

        var acc = new Account();

        String [] slist = { 'a' };
        var ref = slist;
    }
}

Transpiled Apex

public class VarDemo {
    public static void main() {
        String t = 'String';
        Integer size = t.length();
        String str = t.toString();

        Account acc = new Account();

        List slist = { 'a' };
        List ref = slist;
    }
}

Usage

This feature uses the typing information to infer the variable type.

Currently, classes under namespace System have typings imported by default.

Typing information in source directory will be scanned by default.

Configure scanDestDir to scan the destination directory to collect the typing information.

If you want to add any extra directory to scan, add it in classpath, separated by : if there are multiple values.

Exceptions will be thrown if it fails to infer the correct type.