feat: add example for slices

Author: 1995parham

slices/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "slices"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

slices/src/main.rs

@@ -0,0 +1,8 @@
+fn main() {
+    let a = [1, 2, 3, 4, 5];
+    let slice = &a[1..3]; // This slice has the type &[i32]
+
+    // assert_eq! is a macro that panics if the two arguments aren't equal.
+    // It's useful for testing.
+    assert_eq!(slice, &[2, 3]);
+}