Update Examples

Examples.md

@@ -1283,11 +1283,62 @@ fn main
 <td>
 
 ```
+fn is_odd(n: u32) -> bool {
+    n % 2 == 1
+}
 
+fn main() {
+    let upper = 1000;
+
+    // Imperative approach
+    let mut acc = 0;
+    for n in 0.. {
+        let n_squared = n * n;
+
+        if n_squared >= upper {
+            break;
+        } else if is_odd(n_squared) {
+            acc += n_squared;
+        }
+    }
+    println!("imperative style: {}", acc);
+
+    // Functional approach
+    let sum_of_squared_odd_numbers: u32 =
+        (0..).map(|n| n * n)
+             .take_while(|&n_squared| n_squared < upper)
+             .filter(|&n_squared| is_odd(n_squared))
+             .sum();
+    println!("functional style: {}", sum_of_squared_odd_numbers);
+}
 ```
 </td><td>
 
 ```
+// The below will actually make a closure that captures nothing, not a function as on the left; do we care?
+let is_odd = $ % 2 == 1
+
+fn main
+    let upper = 1000
+
+    // Imperative approach
+    let mut acc = 0
+    for n in 0..
+        let n_squared = n * n
+
+        if n_squared >= upper then break
+        else if is_odd n_squared
+            acc += n_squared
+
+    println! "imperative style: {}", acc
+
+    // Functional approach
+    let sum_of_squared_odd_numbers: u32 =
+        (0..).map $ * $
+             .take_while $ < &upper
+             .filter is_odd *$
+             .sum()
+    println! "functional style: {}", sum_of_squared_odd_numbers
 
 ```
 </td></tr></table>