[julia-users] Re: idiom for WITH-OUTPUT-TO-STRING

[harven]

 julia version 0.3.3

    julia> rdstdout, wrstdout = redirect_stdout()
    (Pipe(open, 0 bytes waiting),Pipe(open, 0 bytes waiting))

    julia> print("hello")

    julia> s = readavailable(rdstdout)
    "hello"

Using a IOBuffer() is more idiomatic though. Look at the source of the 
filter function for an example. It is in string.jl. Whatever, here it is:

    function filter(f::Function, s::String)
        out = IOBuffer(Array(Uint8,endof(s)),true,true)
        truncate(out,0)
        for c in s
            if f(c)
                write(out, c)
            end
        end
        takebuf_string(out)
    end