Shallow and deep copy

Help & Support
1

Hi there
Just a simple question

s1 = "abcd"
s2 = s1.dup
s3 = s1

= and dup both create deep copy of the string?

Thx

2

Strings are immutable by default, that’s why String#dup returns self.

When you modify a string, a new one is created, the original is never modified (except when messing with unsafe code).

3

Ok, so is there no difference between second and third line?

thx again

4

Strings are immutable, there’s no way to modify them.

Ok, so is there no difference between second and third line?

No