@.. [thread=false] [broadcast=false] expr

@.. turns expr into a broadcast-like expression, similar to @.. It additionally provides two optional keyword arguments:

• thread: Defaults to false. Use multithreading?
• broadcast: Defaults to false. If true, it will broadcast axes with dynamic runtime sizes of 1 to larger sizes, if false only sizes known to be 1 at compile time will be supported, i.e. axes such that ArrayInterface.known_length(typeof(StaticArrayInterface.static_axes(x,i))) == 1 will be broadcast. Note that this differs from base broadcasting, in that base broadcasting only supports broadcast=true.