initial commit

exercises/01_intro/01_syntax/src/lib.rs

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+// TODO: fix the function signature below to make the tests pass.
+//  Make sure to read the compiler error message—the Rust compiler is your pair programming
+//  partner in this course and it'll often guide you in the right direction!
+//
+// The input parameters should have the same type of the return type.
+fn compute(a: u32, b: u32) -> u32 {
+    // Don't touch the function body.
+    a + b * 2
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::compute;
+
+    #[test]
+    fn case() {
+        assert_eq!(compute(1, 2), 5);
+    }
+}