On Wed, 21 Mar 2012 14:29:14 -0400, H. S. Teoh <hst...@quickfur.ath.cx>
wrote:
A question was asked on the d-learn forum about why this throws a
RangeError:
int[string][int] map;
map["abc"][20]++;
This is understandable, since the compiler translates the second line to:
map.opIndex("abc").opIndexUnary!"++"(20);
Since map["abc"] doesn't exist yet, opIndex throws RangeError before we
ever get to the ++.
What about a create accessor of the map which is the same as accessing the
map, except it ensures T.init is used at each level?
That is:
map.create["abc"][20]++;
Whether you want default-created elements or not is an important design
decision that should not be up to the container.
-Steve
