Re: compatible types for chains of different lengths

[Jon D via Digitalmars-d-learn]

On Tuesday, 17 November 2015 at 23:22:58 UTC, Brad Anderson wrote:

One solution:

 [snip]


Thanks for the quick response. Extending your example, here's 
another style that works and may be nicer in some cases.

import std.stdio;
import std.range;
import std.algorithm;

void main(string[] args)
{
    auto x1 = ["abc", "def", "ghi"];
    auto x2 = ["jkl", "mno", "pqr"];
    auto x3 = ["stu", "vwx", "yz"];

    auto y1 = (args.length > 1) ? x1 : [];
    auto y2 = (args.length > 2) ? x2 : [];
    auto y3 = (args.length > 3) ? x3 : [];

    chain(y1, y2, y3).joiner(", ").writeln;
}