I thought about that but the usual issue of non-O(1) size() methods lead me to avoid having a size() in addition to the toArray(). Not perfect. :(
Mike On Mar 1 2012, at 12:26 , Rémi Forax wrote: > On 03/01/2012 08:50 PM, Mike Duigou wrote: >> Hello all; >> >> Currently Collections.sort() refuses to sort the lists which result from >> calling Collections.singletonList(). This makes some sense because the >> singleton lists are immutable but they are also alway sorted. >> >> This patch allows Collections.sort() to be used with empty and singleton >> lists of all types. A short circuit return is provided for lists of length 0 >> and 1 as they are already sorted. >> >> WEBREV: http://cr.openjdk.java.net/~mduigou/7065380/0/webrev/ >> >> For the unit test ignore the diffs and view the "New" file--webrev doesn't >> understand "hg copy". >> >> Thanks, >> >> Mike > > Is it not better to check list.size() before calling toArray() ? > > Rémi >
