On Saturday, 28 July 2012 at 08:32:57 UTC, Jonathan M Davis wrote:
void main()
{
auto stuff = ["hello world",
"Goodbye, Shirley",
"Babylon 5 rocks"];
auto result = reduce!"a + b.length"(0L, stuff);
assert(result == join(stuff).length);
}
The first parameter is the sum, and the second is the item. So,
I expect that
auto total = reduce!((a, b) => a + b.size())(0, _word_tables);
would work for you.
- Jonathan M Davis
Jonathan, I tried the above suggestion, and also this equivalent
based on your code:
auto total = reduce!"a + b.size()"(0, _word_tables);
in both cases I get
/usr/include/i386-linux-gnu/dmd/phobos/std/conv.d(3330): Error:
cannot implicitly convert expression (_param_1) of type
WordDatabase.WordTable to int
/usr/include/i386-linux-gnu/dmd/phobos/std/algorithm.d(743):
Error: template instance std.conv.emplace!(int,WordTable) error
instantiating
WordDatabase.d(150): instantiated from here:
reduce!(int,WordTable[30u])
WordDatabase.d(150): Error: template instance
std.algorithm.reduce!("a + b.size()").reduce!(int,WordTable[30u])
error instantiating
