[GROOVY-7388] DefaultGroovyMethods class's plus(T[] left, xxxx<T> right) have ambiguous errors

• Type: Bug
• Status: Closed
• Priority: Trivial
• Resolution: Cannot Reproduce
• Affects Version/s: 2.4.3
• Component/s: syntax
• Environment: OS: Arch Linux ; Kernel: x86_64 Linux 3.19.3-3-ARCH; CPU: Intel Core i7-3770S CPU @ 3.9GHz; GPU: GeForce GT 640M; RAM: 7875MB; ; Using IntelliJ IDEA 1:14.1.1-1
• Flags: Patch
• Assignee: Unassigned
• Reporter: Czipperz
• Created: 13/Apr/15 23:53
• Updated: 04/May/17 09:03
• Resolved: 04/May/17 09:03

Description

Trying to use the `groovy.transform.etc` for the first time. When I run it, all works well until it gets to `org.codehaus.groovy.runtime.DefaultGroovyMethods.java`

There are a few problems with how the public static <T> T[] plus(T[] left, xxx right) method. Where xxx is T[], Iterable<T> right, or Collection<T> right.

In all of these cases, you just need to change:
return (T[]) plus(...).toArray();
to
return (T[]) plus((Collection<T>)...).toArray();

Problem solved if you follow these instructions.

Issue Links

• is duplicated by: GROOVY-7389 DefaultGroovyMethods class's plus(T[] left, xxxx<T> right) have ambiguous errors