Re: Java 5 planning

Michael Kay wrote (2008-03-05 16:15):
>> Actually every occurrence of String as a parameter could be 
>> changed to CharSequence allowing the user to pass String, 
>> StringBuffer, and StringBuilder or even CharBuffer.
>>     
>
> The downside is that (a) you can't assume that the supplied value is
> immutable; if you need to retain it beyond the call you have to make a copy;
> (b) there can be a lot of "instance of" testing to see what kind of
> CharSequence you've been given, and (c) you can't compare different kinds of
> CharSequence for equality.
>   

Another downside is that the API will be less trivial for novice Java 
programmers. (So there will probably be more traffic on this list...)

 /Mattias

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