From: Martin Pitt <martin@piware.de>
Date: Sat, 25 Sep 2021 08:20:01 +0000 (+0200)
Subject: serde: Write JSON to file
X-Git-Url: https://piware.de/gitweb/?a=commitdiff_plain;h=c90073a9f013cde0cbf84fa43f986f6c74d38168;p=learn-rust.git

serde: Write JSON to file
---

diff --git a/serde/src/main.rs b/serde/src/main.rs
index 0c9efe9..1357100 100644
--- a/serde/src/main.rs
+++ b/serde/src/main.rs
@@ -1,3 +1,4 @@
+use std::fs;
 use serde::{Serialize, Deserialize};
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -29,6 +30,8 @@ fn create_contacts() {
     // FIXME: Use ? and return Result
     let serialized = serde_json::to_string(&contacts).unwrap();
     println!("serialized: {}", serialized);
+    let mut f = fs::File::create("/tmp/contacts.json").unwrap_or_else(|e| panic!("Could not create /tmp/contacts.json: {:?}", e));
+    serde_json::to_writer_pretty(&mut f, &contacts).unwrap_or_else(|e| panic!("Could not serialize contacts: {:?}", e));
 }
 
 fn main() {