romyilano · July 14, 2024 22:47 · Jul 14, 2024
diff --git a/playground.rs b/playground.rs
@@ -0,0 +1,49 @@
+fn main() {
+    println!("Hello, world!");
+    // fixed sized array
+    let arr1 : [i32; 4] = [3, 23, 4, 2];
+    println!("first element of array {}", arr1[0]);
+    println!("the array is {} long", arr1.len());
+
+    let xs: [i64; 2] = [1, 3];
+    // Arrays are stack allocated.
+    println!("Array occupies {} bytes", std::mem::size_of_val(&xs));
+
+
+    let large_array: [i128; 2000] = [0; 2000];
+    println!("the large array is {} bytes", std::mem::size_of_val(&large_array));
+    println!("the count of large array is {} items", large_array.len());
+
+    let mut baby_vector: Vec<i32> = vec![3,2,5];
+    println!("baby vector is {} items", baby_vector.len());
+    baby_vector.push(32);
+
+    let mut new_vector: Vec<i32> = Vec::new();
+
+    new_vector.push(252);
+    new_vector.push(338);
+
+    println!("New vector mutable array of type integer 32 bit is now {:?}", &new_vector);
+
+    let names: [&str; 3] = ["Fatima", "Tal", "Mayumi"];
+
+    println!("names {:?}", &names);
+
+    // can you put string immutable string slices in the heap?
+    let mut vector_names: Vec<&str> = Vec::new();
+    vector_names.push("Fatima");
+
+    println!("the vector names are {:?}", vector_names);
+
+    vector_names.push("Tal");
+
+    for element in &names {
+        vector_names.push(*element);
+    }
+
+    println!("The vectors names are {:?}", vector_names);
+    println!("The arraynames are {:?}!", names);
+
+    let mut names: Vec<String> = Vec::new();
+    names.push("Fatima".to_string());
+}