2014-07-02 5:29 GMT+02:00 Jim Rees <jimree...@gmail.com>: > Java has StringBuffer, Python has StringIO, R7RS has open-output-string. > Add seek support to ports in general and there you have it. This gives > implementors more flexibility as to speed/space trade-offs rather than make > the string type all things to all people. Just my thoughts... >
Java is broken. From the Java 7 documentation: "A String represents a string in the UTF-16 format in which *supplementary characters* are represented by *surrogate pairs*. Index values refer to char code units, so a supplementary character uses two positions in a String." If you call Java to return you the third character, you will either get the half of a surrogate pair or a completely different character or the operation is is not O(1). Sascha
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