On 28/03/2013 12:11, Neil Hodgson wrote:
Ian Foote:
Specifically, indexing a variable-length encoding like utf-8 is not
as efficient as indexing a fixed-length encoding.
Many common string operations do not require indexing by character
which reduces the impact of this inefficiency. UTF-8 seems like a
reasonable choice for an internal representation to me. One benefit
of UTF-8 over Python's flexible representation is that it is, on
average, more compact over a wide set of samples.
Implementing the regex module (http://pypi.python.org/pypi/regex) would
have been more difficult if the internal representation had been UTF-8,
because of the need to decode, and the implementation would also have
been slower for that reason.
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