Forum Discussion

Anonymous

Not applicable

5 years ago

How List.PositionOF works

But this result seems strange only to me? For the moment I do not exploit what does not fit me. I would like to see if anyone else has the same impression as me.

General Comment

Community Champion

5 years ago

More myths about this mysterious ""(zero-length string)

Anonymous
Not applicable
5 years ago
this seems to me consistent with the fact that the string "" does not contain any characters and therefore there is no corresponding number: it does not exist in the ascii table
do not you think?
- CNENFRNL
  Community Champion
  5 years ago
  Anonymous Yes, my point is since no ascii code is assigned to "", why Text.PositionOf returns positions of "" in "aba", whereas "aba" doesn't split at those positions?
  Nowhere to find an explanation to the mechanism to parse "" by PQ. 🤔
  - Anonymous
    Not applicable
    5 years ago
    Hi CNENFRNL ,
    I came up with this idea, to give a possible explanation to your interesting observation:
    "" is obviously not a character but it is a text (empty but text, while the "empty" character does not exist).
    
    If "" could be used as a character it would become a sort of wildcard like the "?".
    In fact, if you use the function:
    Text.EndsWith ("abc", "c")
    gives TRUE
    and the same happens with
    
    Text.EndsWith ("abc", "") -> TRUE.
    
    From this we could derive that "c" = "" 🙂 and if it holds for c, it holds for any other character.