From: Pete Yandell <pete@...>
Date: 2006-03-08T18:37:31+09:00
Subject: Re: ridiculous behavoir of Array#push and Array#clear

Changing your code to output the actual arrays:

> obj1    = "object1"
> obj2    = "object2"
> obj3    = "object3"
>
> arr1    = Array.new
> arr2    = Array.new
>
> arr1 << obj1
> arr1 << obj2
>
> arr2 << obj3
>
> puts "<arr1>"
> p arr1
>
> puts "<arr2>"
> p arr2
>
> arr1.push( arr2 )
> puts "<arr1 << arr2>"
> p arr1
>
> arr2.clear
> puts "<arr2.clear>"
>
> puts "<arr2>"
> p arr2
>
> puts "<arr1>"
> p arr1

gives you:

> <arr1>
> ["object1", "object2"]
> <arr2>
> ["object3"]
> <arr1 << arr2>
> ["object1", "object2", ["object3"]]
> <arr2.clear>
> <arr2>
> []
> <arr1>
> ["object1", "object2", []]

which should give you a hint as to what's going on.

Pete Yandell