[fpc-pascal] Iterator for Unicode encoded strings
Michael Van Canneyt
michael at freepascal.org
Wed Apr 27 16:59:45 CEST 2016
On Wed, 27 Apr 2016, Graeme Geldenhuys wrote:
> This question really applies for all Unicode encodings (UTF-8, UTF-16
> and UTF-32). In the modern world you simply can't use indexed access
> into Object Pascal strings to retrieve a "character" (loosely what you
> see on the screen - ignoring combining diacritics). In my own projects I
> have custom written Iterators for various data types like StringList,
> ObjectLists etc, and that includes strings.
> I know FPC RTL supports the Iterator concept (not as advanced as what I
> have implemented), but still useful. As far as I know there are some
> standard iterator classes already implemented. Does FPC include such
> iterators for the various string types?
Simply said: No. The character iterator
C : Char;
S : String; // or unicode string
for c in S do
Will iterate bytes or words, not characters.
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