8 lines
155 B
Text
8 lines
155 B
Text
declare
|
|
A
|
|
B = !!A %% B is a read-only view of A
|
|
in
|
|
thread
|
|
B = 43 %% this blocks until A is known; then it fails because 43 \= 42
|
|
end
|
|
A = 42
|