main.lua (2114a04) - computation_practice

main.lua

#!/usr/bin/env lua

local function identity(x) return x end

local function cup(x)
    if type(x) == "table" then
        return table.unpack(x)
    else
        return x
    end
end

local TYPES = {
    ln = {
        -- how to generate the problem (returns problem-object)
        gen = function()
            return math.exp(6.9 * math.random())
        end,
        -- how to present the problem (for string.format)
        disp = "ln(%.2f)",
        -- produce correct answer-object from problem-object
        func = math.log,
        -- check quality of guess g for problem p
        score = function(p, g) return -(math.log(math.abs(math.log(p) - g), 10) + 1.5)^3 end,
    },
}

-- ideally, configure these parameters with options/inputs
local TYPE = TYPES.ln
local TIME = 30

local ts = 0
local st = os.time()
local pc = 0
while os.time() - st < TIME do
    local rp = TYPE.gen()
    local ans = TYPE.func(rp)
    io.write(string.format(TYPE.disp .. " ? ", cup(rp)))
    io.flush()
    inp = tonumber(io.read("l")) or 0
    local sc = TYPE.score(rp, inp)
    if sc > 0 then
        io.write(string.format("✓ correct (%.3f)\n", ans))
    else
        io.write(string.format("wrong (%.3f)\n", ans))
    end
    ts = ts + sc
    pc = pc + 1
end
io.write(string.format("score %.1f from %d problems in %.1f seconds\n", ts, pc, TIME))

computation_practice

Radically restructure game mechanics