Loose implementation of Python style fstring literal string interpolation
based on Printf.@sprintf.
julia> using FStrings
julia> f"π = {π:.2f}"
"π = 3.14"
julia> x = 30
julia> f"0x{x+1:02x}"
"0x1f"Please refer to Printf.@sprintf
for further details on the available format specifiers.
Also refer to the principle syntax of
fstring literal string interpolation.