Compilation Firewalls

[George2]

Hello everyone,


Any ideas why Pimpl idiom is called "Compilation Firewalls"?

http://www.gotw.ca/gotw/024.htm

I have thought for a while, and I think client code does not need to compile in Pimpl idiom, so like a firewall to block compile, it is called "Compilation Firewalls".

Any ideas why it is named "Compilation Firewalls"?


thanks in advance,
George