[1]https://docs.julialang.org/en/v1/
   Notes
   Chapter 1: getting started
   - install and run
   Chapter 2: variables
   for T in
   [Int8,Int16,Int32,Int64,Int128,UInt8,UInt16,UInt32,UInt64,UInt128]
              println("$(lpad(T,7)): [$(typemin(T)),$(typemax(T))]")
   end
   lpad() appears to be a built-in function that extends a string with
   spaces on the left
   typemin() and typemax() return the extreme-most values for a type
   types appear to be values, which is great
   multiplication by prefixing a variable with an expression:
   julia> x = 3
   3
   julia> 2x^2 - 3x + 1
   10
   further types: Float16, Float32, Float64, BigInt, BigFloat
   further functions:
   eps(): smallest representable delta for a type at 1.0
   nextfloat(), prevfloat(): adjacent floats
   bitstring(): shows raw bits
   zero(), one(): return identity literals of passed type
   big"1.3": arbitrary-precision literals
   parse(T, str): number parsing
   setprecision(digits): change BigFloat precision

References

   1. https://docs.julialang.org/en/v1/