According to the article both str and str2 will point to the same char[] on the heap, but they are represented by two different RString objects. As you said whe

According to the article both str and str2 will point to the same char[] on the heap, but they are represented by two different RString objects. As you said when you want to access str and str2 you need to look them up in a table. So why not have both entries on the table point to the same RString, instead of pointing to two different RString's that point to the same char[]?