Try releasing new rust revision

Author: RoyalIcing

Makefile

@@ -17,6 +17,9 @@ dev:
 build:
 	mix template_assets && mix phx.digest
 
+cargo_build:
+	cd native/componentsguide_rustler_math/ && cargo build --release
+
 clean:
 	rm -rf ./_build
 

lib/components_guide/rustler/math.ex

@@ -1,20 +1,24 @@
 defmodule ComponentsGuide.Rustler.Math do
-  # use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math
-  # use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math, target_dir: System.tmp_dir!()
-  # use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math, cargo: {:rustup, :stable}
+  if Mix.env() == :dev do
+    use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math
+    # use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math, target_dir: System.tmp_dir!()
+    # use Rustler, otp_app: :components_guide, crate: :componentsguide_rustler_math, cargo: {:rustup, :stable}
+  end
 
-  app = Mix.Project.config()[:app]
-  version = Mix.Project.config()[:version]
+  if Mix.env() == :prod do
+    app = Mix.Project.config()[:app]
+    version = Mix.Project.config()[:version]
 
-  use RustlerPrecompiled,
-    otp_app: app,
-    crate: "componentsguide_rustler_math",
-    base_url:
-      "https://github.com/ComponentsGuide/components_guide/releases/download/v#{version}",
-    force_build: System.get_env("RUSTLER_PRECOMPILATION_EXAMPLE_BUILD") in ["1", "true"],
-    version: version
+    use RustlerPrecompiled,
+      otp_app: app,
+      crate: "componentsguide_rustler_math",
+      base_url: "https://github.com/ComponentsGuide/components_guide/releases/download/v#{version}",
+      force_build: System.get_env("RUSTLER_PRECOMPILATION_EXAMPLE_BUILD") in ["1", "true"],
+      version: version
+  end
 
   def add(_, _), do: error()
+  def reverse_string(_), do: error()
 
   defp error, do: :erlang.nif_error(:nif_not_loaded)
 end

lib/components_guide_web/templates/cheatsheets/intro.html.md

@@ -2,3 +2,4 @@ Various cheatsheets will be added over time. If you have ideas for cheatsheets,
 
 <p><%= 6 + 1 %></p>
 <p><%= ComponentsGuide.Rustler.Math.add(5, 9) %></p>
+<p><%= ComponentsGuide.Rustler.Math.reverse_string("hello") %></p>

mix.exs

@@ -1,7 +1,7 @@
 defmodule ComponentsGuide.MixProject do
   use Mix.Project
 
-  @version "0.1.0"
+  @version "0.1.1"
 
   def project do
     [

native/componentsguide_rustler_math/src/lib.rs

@@ -3,4 +3,10 @@ fn add(a: i64, b: i64) -> i64 {
     a + b
 }
 
-rustler::init!("Elixir.ComponentsGuide.Rustler.Math", [add]);
+#[rustler::nif]
+fn reverse_string(a: String) -> String {
+  // return a;
+    return a.chars().rev().collect();
+}
+
+rustler::init!("Elixir.ComponentsGuide.Rustler.Math", [add, reverse_string]);