From 5625678e5787f222d9a35c59da93a6f36cb6a322 Mon Sep 17 00:00:00 2001
From: Skarlett <360d@pm.me>
Date: Fri, 11 Mar 2022 03:11:16 -0600
Subject: [PATCH] Add easy lifetime problems

---
 solutions/lifetime/lifetime.md | 66 ++++++++++++++++++++++++++++++++++
 src/lifetime/basic.md          | 66 +++++++++++++++++++++++++++++++++-
 2 files changed, 131 insertions(+), 1 deletion(-)
 create mode 100644 solutions/lifetime/lifetime.md

diff --git a/solutions/lifetime/lifetime.md b/solutions/lifetime/lifetime.md
new file mode 100644
index 0000000..68be366
--- /dev/null
+++ b/solutions/lifetime/lifetime.md
@@ -0,0 +1,66 @@
+# Lifetime
+
+
+**Lifetimes**
+
+1. 🌟
+```rust,editable
+/* Make it work */
+
+#[derive(Debug)]
+struct NoCopyType {}
+
+#[derive(Debug)]
+struct Example<'a, 'b> {
+    a: &'a u32,
+    b: &'b NoCopyType
+}
+
+fn main()
+{ 
+  /* 'a tied to fn-main stackframe */
+  let var_a = 35;
+  let example: Example;
+  
+  // {
+    /* lifetime 'b tied to new stackframe/scope */ 
+    let var_b = NoCopyType {};
+    
+    /* fixme */
+    example = Example { a: &var_a, b: &var_b };
+  // }
+  
+  println!("(Success!) {:?}", example);
+}
+```
+
+
+2. 🌟
+```rust,editable
+
+#[derive(Debug)]
+struct NoCopyType {}
+
+#[derive(Debug)]
+#[allow(dead_code)]
+struct Example<'a, 'b> {
+    a: &'a u32,
+    b: &'b NoCopyType
+}
+
+/* Fix function signature */
+fn fix_me<'b>(foo: &Example<'b>) -> &'b NoCopyType
+{ foo.b }
+
+fn main()
+{
+    let no_copy = NoCopyType {};
+    let example = Example { a: &1, b: &no_copy };
+    fix_me(&example);
+    print!("Success!")
+}
+```
+
+
+
+
diff --git a/src/lifetime/basic.md b/src/lifetime/basic.md
index 40439f4..7c6dde2 100644
--- a/src/lifetime/basic.md
+++ b/src/lifetime/basic.md
@@ -23,4 +23,68 @@ fn args<'a, 'b, T: ToCStr>(&'a mut self, args: &'b [T]) -> &'a mut Command // ex
 fn new(buf: &mut [u8]) -> BufWriter;                    // elided
 fn new(buf: &mut [u8]) -> BufWriter<'_>;                // elided (with `rust_2018_idioms`)
 fn new<'a>(buf: &'a mut [u8]) -> BufWriter<'a>          // expanded
-```
\ No newline at end of file
+```
+
+**Lifetimes**
+
+1. 🌟
+```rust,editable
+/* Make it work */
+
+#[derive(Debug)]
+struct NoCopyType {}
+
+#[derive(Debug)]
+struct Example<'a, 'b> {
+    a: &'a u32,
+    b: &'b NoCopyType
+}
+
+fn main()
+{ 
+  /* 'a tied to fn-main stackframe */
+  let var_a = 35;
+  let example: Example;
+  
+  {
+    /* lifetime 'b tied to new stackframe/scope */ 
+    let var_b = NoCopyType {};
+    
+    /* fixme */
+    example = Example { a: &var_a, b: &var_b };
+  }
+  
+  println!("(Success!) {:?}", example);
+}
+```
+
+
+2. 🌟
+```rust,editable
+
+#[derive(Debug)]
+struct NoCopyType {}
+
+#[derive(Debug)]
+#[allow(dead_code)]
+struct Example<'a, 'b> {
+    a: &'a u32,
+    b: &'b NoCopyType
+}
+
+/* Fix function signature */
+fn fix_me(foo: &Example) -> &NoCopyType
+{ foo.b }
+
+fn main()
+{
+    let no_copy = NoCopyType {};
+    let example = Example { a: &1, b: &no_copy };
+    fix_me(&example);
+    print!("Success!")
+}
+```
+
+
+
+