From 235104ae7546116a02cfd39e2a870a999e57c1a9 Mon Sep 17 00:00:00 2001
From: Paul Campbell <pcampbell@kemitix.net>
Date: Sun, 31 Mar 2024 18:45:03 +0100
Subject: [PATCH] handle each symbol concurrently

---
 src/main.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index ee41bee..ed2b345 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@ use async_std::prelude::*;
 use chrono::prelude::*;
 
 use clap::Parser;
+use futures::future::try_join_all;
 use std::{
     io::{Error, ErrorKind},
     time::Duration,
@@ -160,9 +161,12 @@ async fn fetch_and_output_symbol_data(
     from: DateTime<Utc>,
     to: DateTime<Utc>,
 ) -> std::io::Result<()> {
+    let mut fs = vec![];
     for symbol in symbols.split(',') {
-        fetch_and_output_closing_data(symbol, from, to).await?;
+        let f = fetch_and_output_closing_data(symbol, from, to);
+        fs.push(f);
     }
+    try_join_all(fs).await?;
     Ok(())
 }