From: Philip Mateescu <philip@...>
Date: 2002-06-05T03:41:16+09:00
Subject: When should actually freeze work ?

Hi,

I have the following cases where I thought freeze should work. It doesn't,
and I have no clue as to why... (in all cases assignment seems to cancel the
values).

1.
s = "abc"
s.freeze
s.frozen ? # >> true
s = "123"  # doesn't throw a can't modify frozen string. why ?
s.frozen?  # >> false (but I thought I told it to freeze :)

2.
s = "abc"
t = "123"
s.freeze    #s="abc", frozen; t="123", !frozen
t = s       #s="abc", frozen; t="abc", frozen
t = "123"   #s="abc", frozen; t="123", !frozen
s = t       #s="123", frozen; t="123", !frozen

3.
i = "50"
1.upto(5) { |i|
    puts "i=#{i}"
}


All 3 cases under version 1.7.2 (both cygwin and windows).

Thanks a lot,
philip