Table Trouble

[IdeasVacuum]

If I read my text file into a Table, each table index contains a line from the text file, correct? What I need to do is be able to use a specific line with other functions, but although the Help seems to suggest that an individual index will be accepted as a string, this does not work when the string is created by TextFile.ReadToTable.

So, I thought this might work:

tTable = {};
tTable = TextFile.ReadToTable(MyInfo);
sTable = Table.Remove(tTable, 1);

Table.Remove invokes an error:

On Preload, Line 171: Argument 1 must be of type table.


Now, tTable[1], for example, contains a string (first line of the text file) but the following fails too:

sNewString = String.Concat("MyPrefix = \"", tTable[1]);

So what is the correct way to use a table value that contains a string, as a string?

[Ulrich]

If you get the error that argument 1 is not a table, then your ReadToTable() action failed. As a result, Table.Remove(tTable, 1) and String.Concat("MyPrefix = \"", tTable[1]) will both fail. Add some error checking, like this:

if File.DoesExist(MyInfo) then
  tTable = TextFile.ReadToTable(MyInfo);
  error = Application.GetLastError();
  if (error ~= 0) then
    Dialog.Message("Error", _tblErrorMessages[error], MB_OK, MB_ICONEXCLAMATION);
  else
    local line = Table.Remove(tTable, 1);
    error = Application.GetLastError();
    if (error ~= 0) then
      Dialog.Message("Error", _tblErrorMessages[error], MB_OK, MB_ICONEXCLAMATION);
    else
      Dialog.Message("Info", "The first line of text is: " .. line, MB_OK);
    end
  end
else
  Dialog.Message("Error", "File '" .. MyInfo .. "' does not exist!", MB_OK, MB_ICONEXCLAMATION); 
end

Ulrich

[IdeasVacuum]

Thanks for your help Ulrich. It is in fact a hit and miss thing, I suspect that the misses occur if the file contains an unexpected character. So on this occasion I have written an external exe to perform the task and pass a 'known to be pure ascii' string back to Suf, which works great.