determining the nature of one character

[BenCharles]

Hello,

Could someone please show me how to determine if the content of a one-character string is a letter and not a number?

Thank you

[micha]

Try this:

Code: Select all

if tonumber(string) then
  -- string is a number
else
  -- string is something else
end

It works for multi-character strings, too.

[BenCharles]

Thank you that is excellent. Although it only works for identifying numbers, not letters, it's all I needed

[Xgoff]

Code: Select all

if your_string:match("%a") then
    -- ...
end