3 files changed, 63 insertions, 0 deletions
diff --git a/v_windows/v/old/examples/concurrency/concurrency.v b/v_windows/v/old/examples/concurrency/concurrency.v
new file mode 100644
index 0000000..92a5517
--- /dev/null
+++ b/v_windows/v/old/examples/concurrency/concurrency.v
@@ -0,0 +1,18 @@
+import time
+
+// Simulate expensive computing using sleep function
+fn expensive_computing(id int, duration int) {
+	println('Executing expensive computing task ($id)...')
+	time.sleep(duration * time.millisecond)
+	println('Finish task $id on $duration ms')
+}
+
+fn main() {
+	mut threads := []thread{}
+	threads << go expensive_computing(1, 100)
+	threads << go expensive_computing(2, 500)
+	threads << go expensive_computing(3, 1000)
+	// Join all tasks
+	threads.wait()
+	println('All jobs finished!')
+}
diff --git a/v_windows/v/old/examples/concurrency/concurrency_http.v b/v_windows/v/old/examples/concurrency/concurrency_http.v
new file mode 100644
index 0000000..b5b0b58
--- /dev/null
+++ b/v_windows/v/old/examples/concurrency/concurrency_http.v
@@ -0,0 +1,32 @@
+import net.http
+import sync
+import time
+
+fn vlang_time(mut wg sync.WaitGroup) ?string {
+	start := time.ticks()
+	data := http.get('https://vlang.io/utc_now') ?
+	finish := time.ticks()
+	println('Finish getting time ${finish - start} ms')
+	println(data.text)
+	wg.done()
+	return data.text
+}
+
+fn remote_ip(mut wg sync.WaitGroup) ?string {
+	start := time.ticks()
+	data := http.get('https://api.ipify.org') ?
+	finish := time.ticks()
+	println('Finish getting ip ${finish - start} ms')
+	println(data.text)
+	wg.done()
+	return data.text
+}
+
+fn main() {
+	mut wg := sync.new_waitgroup()
+	wg.add(2)
+	// Run tasks async
+	go vlang_time(mut wg)
+	go remote_ip(mut wg)
+	wg.wait()
+}
diff --git a/v_windows/v/old/examples/concurrency/concurrency_returns.v b/v_windows/v/old/examples/concurrency/concurrency_returns.v
new file mode 100644
index 0000000..6d687e4
--- /dev/null
+++ b/v_windows/v/old/examples/concurrency/concurrency_returns.v
@@ -0,0 +1,13 @@
+fn expensive_computing(i int) int {
+	return i * i
+}
+
+fn main() {
+	mut threads := []thread int{}
+	for i in 1 .. 10 {
+		threads << go expensive_computing(i)
+	}
+	// Join all tasks
+	r := threads.wait()
+	println('All jobs finished: $r')
+}