info
Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
usefull expression for initializing something
11 views
Skip to first unread message
Rainer Weikusat
Nov 4, 2020, 2:20:29 PM11/4/20
to
\%by_addr = $$self[BY_ADDR] //= {};
This will (with refaliasing enabled) cause %by_addr to refer to the
anonymous hash stored in $$self[BY_ADDR]. If $$self[BY_ADDR] is
undefined, it'll first create an anonymous hash and assign a reference
to that to $$self[BY_ADDR].
This will (with refaliasing enabled) cause %by_addr to refer to the
anonymous hash stored in $$self[BY_ADDR]. If $$self[BY_ADDR] is
undefined, it'll first create an anonymous hash and assign a reference
to that to $$self[BY_ADDR].
0 new messages