04.06.14 20:05, Paul Sokolovsky написав(ла):
On Wed, 04 Jun 2014 19:49:18 +0300
Serhiy Storchaka <storch...@gmail.com> wrote:
html.HTMLParser, json.JSONDecoder, re.compile, tokenize.tokenize
don't use iterators. They use indices, str.find and/or regular
expressions. Common use case is quickly find substring starting from
current position using str.find or re.search, process found token,
advance position and repeat.
That's sad, I agree.
Other languages (Go, Rust) can be happy without O(1) indexing of
strings. All string and regex operations work with iterators or cursors,
and I believe this approach is not significant worse than implementing
strings as O(1)-indexable arrays of characters (for some applications it
can be worse, for other it can be better). But Python is different
language, it has different operations for strings and different idioms.
A language which doesn't support O(1) indexing is not Python, it is only
Python-like language.
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