[Python-Dev] Internal representation of strings and Micropython (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Wed Jun 4 19:35:06 CEST 2014

04.06.14 17:49, Paul Sokolovsky написав(ла):

On Thu, 5 Jun 2014 00:26:10 +1000 Chris Angelico <rosuav at gmail.com> wrote:

On Thu, Jun 5, 2014 at 12:17 AM, Serhiy Storchaka <storchaka at gmail.com> wrote:

04.06.14 10:03, Chris Angelico написав(ла):

Right, which is why I don't like the idea. But you don't need non-ASCII characters to blink an LED or turn a servo, and there is significant resistance to the notion that appending a non-ASCII character to a long ASCII-only string requires the whole string to be copied and doubled in size (lots of heap space used). But you need non-ASCII characters to display a title of MP3 track. Yes, but to display a title, you don't need to do codepoint access at random - you need to either take a block of memory (length in bytes) and do something with it (pass to a C function, transfer over some bus, etc.), or iterate in order over codepoints in a string. All these operations are as efficient (O-notation) for UTF-8 as for UTF-32.

Several previous comments discuss first option, ASCII-only strings.

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