https://issues.dlang.org/show_bug.cgi?id=12842
Issue ID: 12842
Summary: More support for ranges of ranges
Product: D
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: Phobos
Assignee: [email protected]
Reporter: [email protected]
std.range and std.algorithm often have support for an arbitrary number of
ranges passed as seperate parameters, but very few offer range-of-range
support.
Usage example:
auto a = [1,2,3,4];
auto b = [5,6,7,8,9];
//a rectangular matrix in flat form
auto cp = cartesianProduct(a, b).map!"a[0] * b[0]"();
//expand to RoR, take the transform and return to flat
auto cpT = cp.chunks(a.length).roundRobin().joiner();
Currently that doesn't work as roundRobin doesn't know how to handle ranges of
ranges.
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