Signals

Signal{T}

A signal of types

abstract Signal{T}

type Input{T} <: Signal{T} ... end
i = Input(0)    # Construct an input signal of integers with the default value 0

abstract Node{T} <: Signal{T}

Example:

z = @lift x*y

Here when x and y are signals, the above expression is equivalent to:

z = lift((a,b) -> a*b, x, y)

If, say, only x is a signal, then it is equivalent to:

z = lift(a -> a*y, x)

You can also create signals of tuples or arrays:

# E.g.
z = @lift (x, 2y, x*y)
# z is now a Signal{Tuple}