Find in assoc array then iterate

[Ali Çehreli]

On 10/22/22 08:21, Kevin Bailey wrote:

 > his claim that there was no value.

I think he was questioning the need for iterating from a point forward 
inside an unordered container. When the container is unordered, the 
elements that are accessed after a found element could be anything. I 
think that's the puzzling part in your question.

 >      package main

Here is my interpretation of Paul Backus's solution:

module main;

import std.stdio;

void main() {
     int[string] m;
     m["key1"] = 7;
     m["key2"] = 8;

     auto iter = m.byKeyValue();
     // Advance iterator
     iter.popFront();
     // Preserve position
     auto iter2 = iter.save();
     // Exhaust first iterator
     foreach (kv; iter) {
         writeln("iter: ", kv.key, " = ", kv.value);
     }
     // What does second iterator see?
     foreach (kv; iter2) {
         writeln("iter2: ", kv.key, " = ", kv.value);
     }
}

May print (because its unordered):

iter: key2 = 8
iter2: key2 = 8

Ali