Re^2: List::Compare asking for two references

Replies are listed 'Best First'.
Re^3: List::Compare asking for two references by jdporter (Paladin) on Feb 24, 2021 at 18:22 UTC
Sure thing. But do you understand why it works? Check out perlootut and perlobj.	[reply]
Re^4: List::Compare asking for two references by Lotus1 (Vicar) on Feb 26, 2021 at 00:06 UTC
What I wondered about was why my original version gave that error. In looking at the source for List::Compare I see that the first thing the `new()` method does is shift the class name from @_. Since I only provided two arguments the first one got shifted and the error is produced since there is only one remaining. I suppose when you use the correct '->' syntax to call `new()` it puts a copy of the class name into `@_` as the first item. I see in the link you provided, Method Invocation, that this is correct. The syntax I used accidentally is for calling a package subroutine so it accessed `new()` directly.	[reply] [d/l] [select]
Re^5: List::Compare asking for two references by jdporter (Paladin) on Feb 26, 2021 at 18:10 UTC
Exactly. Well done. :-)	[reply]