d链接区间

原文

import std.algorithm : sort;
  import std.conv      : to;
  import std.range;
  import std.stdio;


  enum limit = 5;
  enum step = limit / 10.0;/*
  enum step = 1; //*/

void main()
{
  TypeInfo rangeType;

  auto a = iota(limit);
  auto b = iota(step, limit, step);

  /* <- 切换注解,请加-> /
  auto ab = chain(a, b);
  rangeType = typeid(ab);/*/
  auto arrA = a.array.to!(double[]);
  auto arrB = b.array;
  auto ab = chain(arrA, arrB);
  rangeType = typeid(ab.sort);//*/

  ab.writeln(": ", rangeType);
} /*
current print:
==============
[0, 0.5, 1, 1, 1.5, 2, 2, 2.5, 3, 3, 3.5, 4, 4, 4.5]: std.range.SortedRange!(std.range.chain!(double[], double[]).chain(double[], double[]).Result, "a < b", 0).SortedRange

other print:
============
[0, 1, 2, 3, 4, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5]: std.range.chain!(std.range.iota!(int, int).iota(int, int).Result, std.range.iota!(double, int, double).iota(double, int, double).Result).chain(std.range.iota!(int, int).iota(int, int).Result, std.range.iota!(double, int, double).iota(double, int, double).Result).Result

不同类型(其中一个是double)但相同区间可用chain()链接.但是,因为opCmp()与排序等算法的兼容性,需要转换为数组.