Re: [Wikitech-l] Scribunto, failure in attempt to concatenate an array

Thank you Anomie, it helped me a lot. I'm sorry I missed the information in the manual.

Le 25/09/2017 à 22:21, Brad Jorsch (Anomie) a écrit :

On Mon, Sep 25, 2017 at 4:04 PM, mathieu stumpf guntz < psychoslave@culture-libre.org> wrote:

...

Hi, I have some trouble trying to concatenate an array stored in a Scribunto data module.

 mw.logObject(p.data().voir_aussi)
 table#1 {
   metatable = table#2
   "NU",
   "nú",
   "nụ",
   "nư",
   "nữ",
   "ñu",
   "ňu",
   ".nu",
   "nu!",
 }
 =table.concat(p.data().voir_aussi) == '' -- true

This is mentioned in the reference manual:[1]

- The table actually returned by mw.loadData() has metamethods that
provide read-only access to the table returned by the module. Since it does
not contain the data directly, pairs() and ipairs() will work but other
methods, including #value, next(), and the functions in the Table
library, will not work correctly.

You'll have to copy the data into a real table before concatenating, or concatenate manually. The former is likely faster if the table will have many elements in it.