Add concurrency

2026-10-27 12:41:06 +00:00
commit 2334f4eaf0
31 changed files with 43061 additions and 0 deletions
@@ -0,0 +1,47 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	title = "TOP TEN ZIP CODES BY HIGHEST CURRENT TEMPERATURE"
+)
+
+func display(ztchan chan []*ZipTemp, done chan struct{}) {
+	for {
+		locations, more := <-ztchan
+		if !more {
+			done <- struct{}{}
+			return
+		}
+
+		// Clear the screen.
+		print("\033[H\033[2J")
+
+		// Print the title and top ten.
+		fmt.Println(title)
+		fmt.Printf(
+			"Last update: %s.\n\n",
+			time.Now().Format(time.RFC1123),
+		)
+
+		for i, zt := range locations {
+			if zt == nil {
+				fmt.Printf("%d. No data\n", i+1)
+
+				continue
+			}
+
+			fmt.Printf(
+				"%d. %.02f°F %s (%s, %s)\n",
+				i+1,
+				zt.Temperature,
+				zt.ZipCode,
+				zt.City,
+				zt.State,
+			)
+		}
+	}
+}