`requires exactly 1 or 3 arguments, got 2`

[Moelf]

Sometimes the type is only interpreted as sign or not signed, in that case I try to use something like

@define_integers 32 _ Index32

but then it errors because _ = is illegal

all-underscore identifier used as rvalue around /home/akako/.julia/packages/BitIntegers/6M5fx/src/BitIntegers.jl:60

I think we can maybe add a special case for _ to ignore it

[rfourquet]

Sounds like a goode idea.

[Moelf]

I will make a PR

[PatrickHaecker]

I would prefer having @define_signed_integer and @define_unsigned_integer in addition to @define_integers. Internally they could share most of the code.