Quality of life: have a syntax (probably macro-based?) to immediately initialise a fixed-size array

[giordano]

It'd be nice to have a convenience syntax (macro) to initialise a FixedSizeArray without having to create an undef on first and then setting its elements, something like @SArray and friends in StaticArrays.jl. This is definitely a low-priority right now, but nice to have.

[araujoms]

That would certainly be nice! I don't want to maintain a FArray implementation of ones and zeros.