Merge pull request #604 from sshine/sshine/foo-example-usage

fix(examples/foo): Add to Cargo.toml and .expect() with usage
zesterer · Feb 20, 2024 · 7678d7f · 7678d7f
2 parents 189cff7 + c46d8f3
commit 7678d7f
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diff --git a/Cargo.toml b/Cargo.toml
@@ -137,3 +137,7 @@ required-features = ["std"]
 [[example]]
 name = "io"
 required-features = ["std"]
+
+[[example]]
+name = "foo"
+required-features = ["std"]
diff --git a/examples/foo.rs b/examples/foo.rs
@@ -180,7 +180,8 @@ fn eval<'a>(
 }
 
 fn main() {
-    let src = std::fs::read_to_string(std::env::args().nth(1).unwrap()).unwrap();
+    let usage = "Run `cargo run --example foo -- examples/sample.foo`";
+    let src = std::fs::read_to_string(std::env::args().nth(1).expect(usage)).expect(usage);
 
     match parser().parse(&src).into_result() {
         Ok(ast) => match eval(&ast, &mut Vec::new(), &mut Vec::new()) {