Oh look, another language (ceylon)

Mark Lawrence breamoreboy at yahoo.co.uk
Mon Nov 18 16:06:35 CET 2013


On 18/11/2013 14:31, Piet van Oostrum wrote:
> Chris Angelico <rosuav at gmail.com> writes:
>
>> On Mon, Nov 18, 2013 at 11:29 PM, Ian Kelly <ian.g.kelly at gmail.com> wrote:
>>>
>>> On Nov 18, 2013 3:06 AM, "Chris Angelico" <rosuav at gmail.com> wrote:
>>>>
>>>> I'm trying to figure this out. Reading the docs hasn't answered this.
>>>> If each character in a string is a 32-bit Unicode character, and (as
>>>> can be seen in the examples) string indexing and slicing are
>>>> supported, then does string indexing mean counting from the beginning
>>>> to see if there were any surrogate pairs?
>>>
>>> The string reference says:
>>>
>>> """Since a String has an underlying UTF-16 encoding, certain operations are
>>> expensive, requiring iteration of the characters of the string. In
>>> particular, size requires iteration of the whole string, and get(), span(),
>>> and segment() require iteration from the beginning of the string to the
>>> given index."""
>>>
>>> The get and span operations appear to be equivalent to indexing and slicing.
>>
>> Right, that's what I was looking for and didn't find. (I was searching
>> the one-page reference manual rather than reading in detail.) So, yes,
>> they're O(n) operations. Thanks for hunting that down.
>>
>> ChrisA
>
> It would be so much better to use the Flexible String Representation.
>

I agree but approximately 0.0000000142857% of the world population 
disagrees.

-- 
Python is the second best programming language in the world.
But the best has yet to be invented.  Christian Tismer

Mark Lawrence




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