Use rayon to parallelize the blog post rendering

Author: Turbo87

Cargo.lock

@@ -17,6 +17,7 @@ serde_derive = "1.0"
 serde_yaml = "0.8"
 serde_json = "1.0"
 comrak = "0.13"
+rayon = "1.8.0"
 regex = "1.3"
 sass-rs = "0.2"
 chrono = "0.4"

Cargo.toml

@@ -13,6 +13,7 @@ use std::error::Error;
 use std::fs::{self, File};
 use std::io::{self, Write};
 use std::path::{Path, PathBuf};
+use rayon::prelude::*;
 
 struct Generator<'a> {
     handlebars: Handlebars<'a>,
@@ -126,11 +127,9 @@ impl<'a> Generator<'a> {
         self.render_feed(blog)?;
         self.render_releases_feed(blog)?;
 
-        for (i, post) in blog.posts().iter().enumerate() {
-            let path = self.render_post(blog, post)?;
-            if i == 0 {
-                println!("└─ Latest post: {}\n", self.file_url(&path));
-            }
+        let paths = blog.posts().par_iter().map(|post| self.render_post(blog, post)).collect::<Result<Vec<_>, _>>()?;
+        if let Some(path) = paths.first() {
+            println!("└─ Latest post: {}\n", self.file_url(path));
         }
 
         Ok(())