RosettaCodeData/Task/Show-ASCII-table/Lua/show-ascii-table.lua

17 lines
414 B
Lua

-- map of character values to desired representation
local chars = setmetatable({[32] = "Spc", [127] = "Del"}, {__index = function(_, k) return string.char(k) end})
-- row iterator
local function iter(s,a)
a = (a or s) + 16
if a <= 127 then return a, chars[a] end
end
-- print loop
for i = 0, 15 do
for j, repr in iter, i+16 do
io.write(("%3d : %3s "):format(j, repr))
end
io.write"\n"
end