Compact display of Floats with @show?

General Usage
1 
julia> Base.active_repl.options.iocontext[:compact]=true
true

julia> e = exp(1)
2.71828

julia> @show e;
e = 2.718281828459045
1 Like
2

Try:

using Printf
Base.show(io::IO, f::Float64) = @printf(io, "%.5f", f)
1 Like
3

well, better

using Printf
Base.show(io::IO, f::Float64) = @printf(io, "%5g", f)

otherwise small numbers are shown as zeros

2 Likes
4

The next question. After I had set the compact display as above, I needed an exact value of a variable. How can I get it?

julia> x = 0.012345678901234
0.012345678901234

julia> using Printf

julia> Base.show(io::IO, f::Float64) = @printf(io, "%5g", f)

julia> x
0.0123457

julia> Base.show(io::IO, f::Float64) = @printf(io, "%15g", f)

julia> x
      0.0123457 # the only difference now it's displayed with an offset
5

A workaround solution to my question above:

julia> x = 0.012345678901234
0.0123457

julia> string(x)
"0.012345678901234"