InputRange Concatenation

Question

Is there a higher-order range pattern that concatenates two or more InputRanges?

Something like

foreach (e; a) {
    // do stuff with e
}
foreach (e; b) {
    // do stuff with e
}
...

should instead be written as

foreach (e; someMagic(a, b, ...)) {
    // do stuff with e
}

Answer 1

someMagic is chain from std.range: http://dlang.org/phobos/std_range.html#chain