completed 06 ticket management

exercises/06_ticket_management/08_impl_trait/src/lib.rs

@@ -7,6 +7,14 @@ pub struct TicketStore {
     tickets: Vec<Ticket>,
 }
 
+impl TicketStore {
+    fn in_progress(&self) -> impl Iterator<Item = &Ticket> {
+        self.tickets
+            .iter()
+            .filter(|&a| a.status == Status::InProgress)
+    }
+}
+
 #[derive(Clone, Debug, PartialEq)]
 pub struct Ticket {
     pub title: TicketTitle,

exercises/06_ticket_management/09_impl_trait_2/src/lib.rs

@@ -33,7 +33,10 @@ impl TicketStore {
     // that can be infallibly converted into a `Ticket`.
     // This can make it nicer to use the method, as it removes the syntax noise of `.into()`
     // from the calling site. It can worsen the quality of the compiler error messages, though.
-    pub fn add_ticket(&mut self, ticket: impl Into<Ticket>) {
+    pub fn add_ticket<T>(&mut self, ticket: T)
+    where
+        T: Into<Ticket>,
+    {
         self.tickets.push(ticket.into());
     }
 }

exercises/06_ticket_management/10_slices/src/lib.rs

@@ -1,6 +1,9 @@
 // TODO: Define a function named `sum` that takes a reference to a slice of `u32` and returns the sum of all
 //  elements in the slice.
 
+fn sum(v: &[u32]) -> u32 {
+    v.iter().sum()
+}
 #[cfg(test)]
 mod tests {
     use super::*;

exercises/06_ticket_management/11_mutable_slices/src/lib.rs

@@ -1,6 +1,14 @@
 // TODO: Define a function named `squared` that raises all `i32`s within a slice to the power of 2.
 //  The slice should be modified in place.
 
+fn squared(v: &mut [i32]) {
+    for val in v.iter_mut() {
+        *val = val.pow(2);
+    }
+    // let b = v.iter().map(|a| a.pow(2)).collect::<Vec<_>>().as_slice();
+    // v = b;
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

exercises/06_ticket_management/12_two_states/src/lib.rs

@@ -11,6 +11,7 @@ use ticket_fields::{TicketDescription, TicketTitle};
 #[derive(Clone)]
 pub struct TicketStore {
     tickets: Vec<Ticket>,
+    total: usize,
 }
 
 #[derive(Clone, Copy, Debug, PartialEq)]
@@ -41,11 +42,25 @@ impl TicketStore {
     pub fn new() -> Self {
         Self {
             tickets: Vec::new(),
+            total: 0,
         }
     }
 
-    pub fn add_ticket(&mut self, ticket: Ticket) {
+    pub fn add_ticket(&mut self, ticket: TicketDraft) -> TicketId {
-        self.tickets.push(ticket);
+        let newID = TicketId(self.total as u64 + 1);
+        let tick: Ticket = Ticket {
+            title: ticket.title,
+            description: ticket.description,
+            status: Status::ToDo,
+            id: newID,
+        };
+        self.tickets.push(tick);
+        self.total += 1;
+        return newID;
+    }
+
+    pub fn get(&self, id: TicketId) -> Option<&Ticket> {
+        return Some(&self.tickets[(id.0 - 1) as usize]);
     }
 }
 

exercises/06_ticket_management/13_index/src/lib.rs

@@ -1,5 +1,7 @@
 // TODO: Implement `Index<&TicketId>` and `Index<TicketId>` for `TicketStore`.
 
+use std::ops::Index;
+
 use ticket_fields::{TicketDescription, TicketTitle};
 
 #[derive(Clone)]
@@ -58,6 +60,20 @@ impl TicketStore {
     }
 }
 
+impl Index<TicketId> for TicketStore {
+    type Output = Ticket;
+    fn index(&self, index: TicketId) -> &Self::Output {
+        return &self.tickets[index.0 as usize];
+    }
+}
+
+impl Index<&TicketId> for TicketStore {
+    type Output = Ticket;
+    fn index(&self, index: &TicketId) -> &Self::Output {
+        return &self.tickets[index.0 as usize];
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::{Status, TicketDraft, TicketStore};

exercises/06_ticket_management/14_index_mut/src/lib.rs

@@ -1,6 +1,6 @@
 // TODO: Implement `IndexMut<&TicketId>` and `IndexMut<TicketId>` for `TicketStore`.
 
-use std::ops::Index;
+use std::ops::{Index, IndexMut};
 use ticket_fields::{TicketDescription, TicketTitle};
 
 #[derive(Clone)]
@@ -75,6 +75,18 @@ impl Index<&TicketId> for TicketStore {
     }
 }
 
+impl IndexMut<TicketId> for TicketStore {
+    fn index_mut(&mut self, index: TicketId) -> &mut Self::Output {
+        self.tickets.iter_mut().find(|a| a.id == index).unwrap()
+    }
+}
+
+impl IndexMut<&TicketId> for TicketStore {
+    fn index_mut(&mut self, index: &TicketId) -> &mut Self::Output {
+        self.tickets.iter_mut().find(|a| a.id == *index).unwrap()
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::{Status, TicketDraft, TicketStore};

exercises/06_ticket_management/15_hashmap/src/lib.rs

@@ -11,7 +11,7 @@ pub struct TicketStore {
     counter: u64,
 }
 
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub struct TicketId(u64);
 
 #[derive(Clone, Debug, PartialEq)]
@@ -38,7 +38,7 @@ pub enum Status {
 impl TicketStore {
     pub fn new() -> Self {
         Self {
-            tickets: todo!(),
+            tickets: HashMap::new(),
             counter: 0,
         }
     }
@@ -52,16 +52,16 @@ impl TicketStore {
             description: ticket.description,
             status: Status::ToDo,
         };
-        todo!();
+        self.tickets.insert(id, ticket);
         id
     }
 
     pub fn get(&self, id: TicketId) -> Option<&Ticket> {
-        todo!()
+        self.tickets.get(&id)
     }
 
     pub fn get_mut(&mut self, id: TicketId) -> Option<&mut Ticket> {
-        todo!()
+        self.tickets.get_mut(&id)
     }
 }
 

exercises/06_ticket_management/16_btreemap/src/lib.rs

@@ -13,7 +13,16 @@ pub struct TicketStore {
     counter: u64,
 }
 
-#[derive(Clone, Copy, Debug, PartialEq)]
+impl<'a> IntoIterator for &'a TicketStore {
+    type Item = &'a Ticket;
+    type IntoIter = std::collections::btree_map::Values<'a, TicketId, Ticket>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.tickets.values()
+    }
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Ord, PartialOrd)]
 pub struct TicketId(u64);
 
 #[derive(Clone, Debug, PartialEq)]
@@ -40,7 +49,7 @@ pub enum Status {
 impl TicketStore {
     pub fn new() -> Self {
         Self {
-            tickets: todo!(),
+            tickets: BTreeMap::new(),
             counter: 0,
         }
     }
@@ -54,16 +63,16 @@ impl TicketStore {
             description: ticket.description,
             status: Status::ToDo,
         };
-        todo!();
+        self.tickets.insert(id, ticket);
         id
     }
 
     pub fn get(&self, id: TicketId) -> Option<&Ticket> {
-        todo!()
+        self.tickets.get(&id)
     }
 
     pub fn get_mut(&mut self, id: TicketId) -> Option<&mut Ticket> {
-        todo!()
+        self.tickets.get_mut(&id)
     }
 }