add exercise-{solutions|templates}/iterators

exercise-solutions/iterators/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

exercise-solutions/iterators/numbers.txt

@@ -0,0 +1,11 @@
+//ignore everything that is not a number
+1
+2
+3
+4
+five
+6
+7
+∞
+9
+X

exercise-solutions/iterators/src/bin/iters1.rs

@@ -0,0 +1,15 @@
+#![allow(unused_imports)]
+use std::io::{BufReader};
+use std::fs::File;
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    use crate::*;
+    let f = File::open("numbers.txt")?;
+    let mut reader = BufReader::new(f);
+    let sum_of_odd_numbers: i32 = todo!("use reader.lines() and Iterator methods");
+
+    assert_eq!(sum_of_odd_numbers, 20);
+    Ok(())
+}
+

exercise-templates/iterators/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "iterators"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

exercise-templates/iterators/numbers.txt

@@ -0,0 +1,11 @@
+//ignore everything that is not a number
+1
+2
+3
+4
+five
+6
+7
+∞
+9
+X

exercise-templates/iterators/src/lib.rs

@@ -0,0 +1,18 @@
+#![allow(unused_imports)]
+use std::io::BufReader;
+use std::fs::File;
+use std::error::Error;
+
+#[test]
+fn iterator_test() -> Result<(), Box<dyn Error>> {
+    use crate::*;
+    let f = File::open("numbers.txt")?;
+    let mut reader = BufReader::new(f);
+
+    // Write your iterator chain here 
+    let sum_of_odd_numbers: i32 = todo!("use reader.lines() and Iterator methods");
+
+    assert_eq!(sum_of_odd_numbers, 20);
+    Ok(())
+}
+