使用Retractor的Concat Publishers，但处理元素不同

Question

我有类似的东西：

if (File.Exists("important.txt"))
{
    using (StreamWriter writer = File.AppendText("important.txt"))
        writer.Write("\r\n" + name + "," + socialid + "," + town + "," +  numsold);
}
else
{ 
    using (StreamWriter writer = new StreamWriter("important.txt"))
    {
        writer.Write(name + "," + socialid + "," + town + "," + numsold);
    }

是否可以将下部元素乘以1，将上部元素乘以2？在现实世界中，我无法区分元素是由哪个发布者产生的。

Answer 1

好的。都使用map()运算符：

Flux<Integer> lower = Flux.just(1, 2, 3, 4, 5).map(i -> i * 1); // completely unnecessary, but you asked for it
Flux<Integer> upper = Flux.just(6, 7, 8, 9, 10).map(i -> i * 2);
Flux<Integer> total = Flux.concat(lower, upper);
total.subscribe(n -> System.out.println(n));