Round everything to 4 decimal places

Question

Is there global setting to round everything that's printed to the terminal in Julia to 4 decimal places?

Any print - float, arrays, matrices, dataframes, structures - if it has float it should be printed with 4 digits after decimal point, like 2.0000.

Answer 1

You could try by overriding the Base.show() method in julia like so:

import Printf

function Base.show(io::IO, f::Float64)
    Printf.@printf(io, "%.4f", f)
end
    

After executing this code, any Float64 value printed to the terminal will be rounded to four decimal places.

Answer 2

Try this:

using Printf
format_float(x) = @sprintf("%.4f", x)
function print_formatted(data)
    if isa(data, AbstractArray)
        for row in eachrow(data)
            println(join([format_float(x) for x in row], "\t"))
        end
    else
        println(format_float(data))
    end
end