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Created Feb 28, 2013
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import std.stdio, std.range, std.typecons, std.algorithm;
void main() {
auto a = iota(5);
auto b = repeat(1).take(3);
auto c = [5,9,30];
auto tup = tuple(a,b,c);
foreach(e; tupWrapper(tup).nWayUnion())
auto tupWrapper(Tup)(Tup tup) {
alias E = ElementType!(Tup.Types[0]);
InputRange!E[] arr;
foreach(T; Tup.Types)
static assert(is(ElementType!T == E));
foreach(ref e; tup)
arr ~= inputRangeObject(e);
return arr;
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