Module:Sandbox/Subscriptshoe9 Explained

--Subscriptshoe9 Google Code-in 2019, Introduction to Lua in Wikipedia

local p =

--Task 2function p.hello(frame) return "Hello, world!" end

p.Hi = function(frame) strName = frame.args.name or "Jimmy" return "Hello from Lua to my friend " .. strName .. ".
" end

--Task 3function p.converttemp(frame) cels = tonumber(frame.args.celsius) or 0 fahr = cels * 9 /5 +32 msg = cels.." degrees Celsius is " msg = msg.. fahr.. " degrees Fahrenheit.
" if cels > 9 then msg = msg.." it is warm." else msg = msg.." it is cold." end return msg end

--Task 4function p.timestable(frame) local numb = tonumber(frame.args.numb) or 2 local out = numb.. " Times table
" for i = 1, 12 do out = out..numb .. " times " ..i.. " is equal to " ..i * numb.. ".
" end return out end

function p.people(frame) local friends = local msg = "" for i = 1,#friends do msg = msg .. "Hello " .. friends[i] .. "
" end return msg end

--Task 5function p.sent(frame) local txt = frame.args.text or "" local out = string.upper(string.sub(txt, 1, 1))..string.sub(txt, 2) return out end

function p.unpack(frame) local dmy = frame.args.dmydate or "" local d, m, y = string.match(dmy, "(%d+) (%w+) (%d+)") return "Year = " .. y .. "
Day = " .. d .. "
Month = " .. m end

--Task 6function p.langs(frame) local langslist = mw.language.fetchLanguageNames local out = "" local count = 0 for k, v in pairs(langslist) do out = out .. k .. " - " .. v .. "
" count = count + 1 end return out .. "
= " .. count .. " languages" end

function p.fallbacklangs(frame) local code = frame.args.langcode or "zh" local answer = mw.language.getFallbacksFor(code) local out = "" for a, b in pairs(answer) do out = out .. a .. " --> " .. b .. "
" end return "Code = " .. code .. "
" ..out end

p.pgtitle = function(frame) local title = frame.args.title local ttlobj = mw.title.new(title) local txt = ttlobj.text return txt end

function p.pginfo(frame) local out = "" local title = frame.args.title local pginfo = mw.title.new(title) if pginfo

nil then return "The Page Name is invalid.(頁面標題係為無效值。)"

end if pginfo.text ~= title then out = out.." does not exist and is not a redirect.(頁面並不存在亦非重定向頁面。)" return "The page you want to enter"..out

end if pginfo.exists

false then out = out.. " does not exist and is not a redirect.(頁面並不存在亦非重定向頁面。)" else if pginfo.isRedirect

true then out = out.." exists and is a redirect.(頁面存在且為重定向頁面。)" else out = out.." exists and is not a redirect.(頁面存在但非重定向頁面。)"

end end return title..out end

return p