Hi Serhiy,

Thanks for your reply. However, the issue I reported was not about sharing the default value. I understand that the parameter L would keep its value [1] from function f's first run, and used it in the second run to get [1, 2].

My point is that the variable v1 only got involved in f's first run. It should keep the result [1] since then. The second calling v2=f(2) is irrelevant to v1, therefore, v1's content shouldn't be changed. v1 should be independent from f's later activities. Please let me know if this makes sense.