https://issues.dlang.org/show_bug.cgi?id=19850
Issue ID: 19850
Summary: double nested joiner .back falsely thinks the range is
empty
Product: D
Version: D2
Hardware: x86_64
OS: Linux
Status: NEW
Severity: enhancement
Priority: P1
Component: phobos
Assignee: [email protected]
Reporter: [email protected]
Consider the following code:
auto outer = [[[0]]];
auto result = outer.map!(
middle => middle.map!(
inner => inner.map!(
i => 0
)
).joiner
).joiner.back;
Expected: result == 0
Got:
[email protected]/linux/bin64/../../src/phobos/std/algorithm/iteration.d(567):
Attempting to fetch the back of an empty map.
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