gists/print_tables/run.lua

#!/usr/bin/lua
local pt = require('pt')

t = {
    A = 'hello',
    B = {
        a = 'beep',
        b = 'boop',
        c = 'burp',
    },
    C = {
        a = 'nude',
        b = 'dude',
        c = 'lewd',
    },
    D = 'goodbye',
}
t.B.d = t.C
t.C.d = t.B
t.E = t

function dump(t, fn, seen)
    if t == nil then return end

    local file = io.open(fn, "w")
    if not file then
        io.write("Failed opening ", fn, "\n")
        return
    end

    local writer = function(...)
        file:write(...)
    end
    seen = pt{t, writer=writer, seen=seen}

    file:close()
    return seen
end

pt{t}
dump(_G, '_G.yml')