can someone explain the concept of "strings (or whatever) being immutable"

[Ben Finney]

Deb Wyatt <codemonkey at inbox.com> writes:

> [no text]

Deb, can you expand a bit – and write the question in the body of your
message? It's not clear what you want explained.

-- 
 \          “I hope if dogs ever take over the world, and they chose a |
  `\    king, they don't just go by size, because I bet there are some |
_o__)                   Chihuahuas with some good ideas.” —Jack Handey |
Ben Finney