On Tuesday, 7 July 2020 at 00:20:40 UTC, solidstate1991 wrote:
See implementation of data structure here:
https://github.com/ZILtoid1991/collections-d/blob/master/source/collections/treemap.d#L565
If I try to compile this code, it'll fail, limiting it's
usecase:
@safe pure unittest {
alias IntMap = TreeMap!(int, int, false);
IntMap test;
test[5] = 5;
test[7] = 7;
test[3] = 3;
foreach(elem, key; test) {
assert(elem == key);
}
}
You can make opApply a template:
int opApply(Dg)(Dg dg)
if (is(Dg : scope int delegate(ref E)))
{
// etc.
}
Because `scope int delegate(ref E) @safe` implicitly converts to
`scope int delegate(ref E)`, this version will accept both @safe
and non-@safe delegates. (And likewise for the other function
attributes.)
