[m-dev.] Unicode support in Mercury

[Julien Fischer]

On Mon, 9 May 2011, Ian MacLarty wrote:

> 2011/5/9 Matt Giuca <matt.giuca at gmail.com>:
>> I feel like languages have two choices: either provide an 8-bit clean
>> string type (e.g., C, Lua, Go, PHP, Ruby), or provide an abstract
>> Unicode string type where the user doesn't need to be aware of the
>> representation (e.g., Java, Python).
>
> I don't think this is true for Java.  The Java length method returns
> the number of code units in the string, not the number of code points
> (for that there is codePointCount).  Mercury's approach seems to me to
> be the same as Java's, except that Java uses UTF16, making it less
> likely for the length to return a different value from codePointCount.
> See http://download.oracle.com/javase/6/docs/api/java/lang/String.html
> and http://download.oracle.com/javase/6/docs/api/java/lang/Character.html#unicode.

Nor apparently in C#,
<http://msdn.microsoft.com/en-us/library/system.string.length.aspx>

Julien.
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