nsCString& SetString(const nsStr& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
nsCString& SetString(const char* aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}
  nsCString& SetString(const nsStr& aString,PRInt32 aLength=-1) {return Assign(aString,aLength);}