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‎courses/comprehensive_rust_training/120_std_traits/99_lab.rst

+30-30
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=================
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Exercise: ROT13
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=================
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-----------------
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ROT13 Problem
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-----------------
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In this example, you will implement the classic
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:url:`"ROT13" cipher <https://en.wikipedia.org/wiki/ROT13>`. Copy this code to the
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playground, and implement the missing bits. Only rotate ASCII alphabetic
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characters, to ensure the result is still valid UTF-8.
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-head :end-before://ANCHOR-solution :code:rust :number-lines:1
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// Implement the `Read` trait for `RotDecoder`.
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-----------------
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ROT13 Main
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-----------------
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-main :code:rust :number-lines:1
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-----------------
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ROT13 Solution
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-----------------
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-solution :end-before://ANCHOR-main :code:rust :number-lines:1
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What happens if you chain two :rust:`RotDecoder` instances together, each
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rotating by 13 characters?
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=================
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Exercise: ROT13
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=================
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-----------------
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ROT13 Problem
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-----------------
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In this example, you will implement the classic
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:url:`"ROT13" cipher <https://en.wikipedia.org/wiki/ROT13>`. Copy this code to the
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playground, and implement the missing bits. Only rotate ASCII alphabetic
12+
characters, to ensure the result is still valid UTF-8.
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-head :end-before://ANCHOR-solution :code:rust :number-lines:1
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// Implement the `Read` trait for `RotDecoder`.
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-----------------
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ROT13 Main
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-----------------
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-main :code:rust :number-lines:1
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-----------------
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ROT13 Solution
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-----------------
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.. container:: source_include 120_std_traits/src/120_std_traits.rs :start-after://ANCHOR-solution :end-before://ANCHOR-main :code:rust :number-lines:1
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What happens if you chain two :rust:`RotDecoder` instances together, each
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rotating by 13 characters?

‎courses/comprehensive_rust_training/130_memory_management/99_lab.rst

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@@ -1,78 +1,78 @@
1-
========================
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Exercise: Builder Type
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========================
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------------------------
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Builder Type Setup
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------------------------
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In this example, we will implement a complex data type that owns all of
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its data. We will use the *builder pattern* to support building a new
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value piece-by-piece, using convenience functions.
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-package :end-before://ANCHOR-package_solution :code:rust
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.. code:: Rust
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impl Package {
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/// Return a representation of this package as a dependency, for use in
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/// building other packages.
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fn as_dependency(&self) -> Dependency {
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todo!("1")
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}
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}
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-builder :end-before://ANCHOR-builder_solution :code:rust
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------------------------
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Builder Type Problem
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------------------------
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Fill in the missing pieces.
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.. code:: rust
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impl PackageBuilder {
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fn new(name: impl Into<String>) -> Self {
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todo!("2")
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}
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/// Set the package version.
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fn version(mut self, version: impl Into<String>) -> Self {
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self.0.version = version.into();
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self
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}
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/// Set the package authors.
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fn authors(mut self, authors: Vec<String>) -> Self {
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todo!("3")
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}
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/// Add an additional dependency.
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fn dependency(mut self, dependency: Dependency) -> Self {
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todo!("4")
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}
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/// Set the language. If not set, language defaults to None.
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fn language(mut self, language: Language) -> Self {
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todo!("5")
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}
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fn build(self) -> Package {
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self.0
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}
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}
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------------------------
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Builder Type Main
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------------------------
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-main :code:rust
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------------------------
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Builder Type Solution
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------------------------
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-package_solution :end-before://ANCHOR-builder :code:rust
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-builder_solution :end-before://ANCHOR-main :code:rust
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========================
2+
Exercise: Builder Type
3+
========================
4+
5+
------------------------
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Builder Type Setup
7+
------------------------
8+
9+
In this example, we will implement a complex data type that owns all of
10+
its data. We will use the *builder pattern* to support building a new
11+
value piece-by-piece, using convenience functions.
12+
13+
.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-package :end-before://ANCHOR-package_solution :code:rust
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.. code:: Rust
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impl Package {
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/// Return a representation of this package as a dependency, for use in
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/// building other packages.
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fn as_dependency(&self) -> Dependency {
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todo!("1")
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}
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}
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25+
.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-builder :end-before://ANCHOR-builder_solution :code:rust
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------------------------
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Builder Type Problem
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------------------------
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Fill in the missing pieces.
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.. code:: rust
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impl PackageBuilder {
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fn new(name: impl Into<String>) -> Self {
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todo!("2")
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}
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/// Set the package version.
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fn version(mut self, version: impl Into<String>) -> Self {
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self.0.version = version.into();
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self
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}
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/// Set the package authors.
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fn authors(mut self, authors: Vec<String>) -> Self {
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todo!("3")
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}
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/// Add an additional dependency.
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fn dependency(mut self, dependency: Dependency) -> Self {
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todo!("4")
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}
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/// Set the language. If not set, language defaults to None.
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fn language(mut self, language: Language) -> Self {
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todo!("5")
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}
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fn build(self) -> Package {
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self.0
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}
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}
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------------------------
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Builder Type Main
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------------------------
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-main :code:rust
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------------------------
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Builder Type Solution
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------------------------
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-package_solution :end-before://ANCHOR-builder :code:rust
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.. container:: source_include 130_memory_management/src/130_memory_management.rs :start-after://ANCHOR-builder_solution :end-before://ANCHOR-main :code:rust

‎courses/comprehensive_rust_training/150_borrowing.rst

+1-1
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@@ -40,4 +40,4 @@ Borrowing
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.. include:: 150_borrowing/02_borrowck.rst
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.. include:: 150_borrowing/03_examples.rst
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.. include:: 150_borrowing/04_interior_mutability.rst
43-
.. include:: 150_borrowing/05_exercise.rst
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.. include:: 150_borrowing/99_lab.rst

‎courses/comprehensive_rust_training/150_borrowing/05_exercise.rst

-28
This file was deleted.

‎courses/comprehensive_rust_training/150_borrowing/99_lab.rst

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=============================
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Exercise: Health Statistics
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=============================
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-----------------------------
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Health Statistics Problem
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-----------------------------
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You're working on implementing a health-monitoring system. As part of that, you
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need to keep track of users' health statistics.
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You'll start with a stubbed function in an :rust:`impl` block as well as a :rust:`User`
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struct definition. Your goal is to implement the stubbed out method on the
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:rust:`User` :rust:`struct` defined in the :rust:`impl` block.
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Copy the code below to https://play.rust-lang.org/ and fill in the
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missing method:
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.. container:: source_include 150_borrowing/src/150_borrowing.rs :start-after://ANCHOR-setup :end-before://ANCHOR-solution :code:rust
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.. code:: rust
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impl User {
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pub fn new(name: String, age: u32, height: f32) -> Self {
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Self { name, age, height, visit_count: 0, last_blood_pressure: None }
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}
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pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport {
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todo!("Update a user's statistics based on measurements from a visit to the doctor")
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}
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}
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-----------------------------
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Health Statistics Main
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-----------------------------
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.. container:: source_include 150_borrowing/src/150_borrowing.rs :start-after://ANCHOR-main :code:rust
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-----------------------------
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Health Statistics Solution
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-----------------------------
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.. container:: source_include 150_borrowing/src/150_borrowing.rs :start-after://ANCHOR-solution :end-before://ANCHOR-main :code:rust

‎courses/comprehensive_rust_training/150_borrowing/src/150_borrowing.rs

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//ANCHOR-setup
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#![allow(dead_code)]
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pub struct User {
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name: String,
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age: u32,
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height: f32,
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visit_count: u32,
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last_blood_pressure: Option<(u32, u32)>,
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}
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pub struct Measurements {
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height: f32,
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blood_pressure: (u32, u32),
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}
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pub struct HealthReport<'a> {
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patient_name: &'a str,
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visit_count: u32,
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height_change: f32,
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blood_pressure_change: Option<(i32, i32)>,
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}
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//ANCHOR-solution
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impl User {
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pub fn new(name: String, age: u32, height: f32) -> Self {
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Self { name, age, height, visit_count: 0, last_blood_pressure: None }
28+
}
29+
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pub fn visit_doctor(&mut self, measurements: Measurements) -> HealthReport {
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self.visit_count += 1;
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let bp = measurements.blood_pressure;
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let report = HealthReport {
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patient_name: &self.name,
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visit_count: self.visit_count,
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height_change: measurements.height - self.height,
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blood_pressure_change: match self.last_blood_pressure {
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Some(lbp) => {
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Some((bp.0 as i32 - lbp.0 as i32, bp.1 as i32 - lbp.1 as i32))
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}
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None => None,
42+
},
43+
};
44+
self.height = measurements.height;
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self.last_blood_pressure = Some(bp);
46+
report
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}
48+
}
49+
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//ANCHOR-main
51+
fn main() {
52+
let bob = User::new(String::from("Bob"), 32, 155.2);
53+
println!("I'm {} and my age is {}", bob.name, bob.age);
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}
55+
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#[test]
57+
fn test_visit() {
58+
let mut bob = User::new(String::from("Bob"), 32, 155.2);
59+
assert_eq!(bob.visit_count, 0);
60+
let report =
61+
bob.visit_doctor(Measurements { height: 156.1, blood_pressure: (120, 80) });
62+
assert_eq!(report.patient_name, "Bob");
63+
assert_eq!(report.visit_count, 1);
64+
assert_eq!(report.blood_pressure_change, None);
65+
assert!((report.height_change - 0.9).abs() < 0.00001);
66+
67+
let report =
68+
bob.visit_doctor(Measurements { height: 156.1, blood_pressure: (115, 76) });
69+
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assert_eq!(report.visit_count, 2);
71+
assert_eq!(report.blood_pressure_change, Some((-5, -4)));
72+
assert_eq!(report.height_change, 0.0);
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}

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