On Sep 19, 2009, at 8:24 AM, John Cowan wrote:

> 3) If strings are immutable, it's possible to have both fast O(1)
> access to individual characters or substrings, and fairly space- 
> efficient
> representation of full Unicode strings, by using different  
> representations
> for strings drawn from diferent character repertoires.  For example,
> an implementation might use 8-bit code units when all characters are
> less than \#x100, 16-bit code units when all characters are less than
> \#x10000, and 32-bit code units otherwise.

John,

For how many years have you been arguing for "space efficient"
internal representations and no one has been listening?  Do you
know why?  [Hint: it's not because implementors don't care about
space efficiency]

Aziz,,,

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