I see that the following is a common idiom in Julia: ... flag = true ... flag && (x = rand(2,2)) ...
which is very handy and concise, but seems to contradict the restriction stated in the documentation<http://docs.julialang.org/en/latest/manual/control-flow/?highlight=short%20circuit#short-circuit-evaluation>: "Just like condition expressions used in if, elseif or the ternary operator, the operands of && or|| must be boolean values (true or false). Using a non-boolean value is an error". Should the documentation be amended here? Is any kind of assignment allowed on the RHS, as long as it is enclosed in parentheses? What about other kinds of statements on the RHS? I note that if the positions of the two operands of && above are reversed, an error is generated, complaining about a non-boolean type used in a boolean context. --Peter
