when I read the doc: http://docwiki.embarcadero.com/RADStudio/Sydney/en/Migrating_Delphi_Code_to_Mobile_from_Desktop it's say that in mobile string is 0-Based, but I heard that it's not the case anymore, so is the doc inaccurate ?
2 Answers
"..so is the doc inaccurate ?"
Yes, the document you are reading is not updated with the latest information.
See Zero-based strings:
Compilers (desktop and mobile) have as predefined {$ZEROBASEDSTRINGS OFF} indicating the use 1-based string indexes.
Note: Previous to Delphi 10.4 the mobile compilers used by default 0-based indexing for strings.
You can still use zero-based strings by setting {$ZEROBASEDSTRINGS ON}
Also from docs:
In general terms, string indexing is now uniform across platforms and uses 1-based index model.
Notice however that:
- Delphi string type helpers (TStringHelper) remain 0-based.
- All Delphi global flat functions are 1-based.
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