From aae6a60036c241a0750423990e357b4646a99ce2 Mon Sep 17 00:00:00 2001
From: Augusto <aug.ornelas@gmail.com>
Date: Fri, 19 Mar 2021 23:26:44 +0000
Subject: [PATCH] Found the subject for border_cross

---
 subjects/border_cross/README.md | 79 +++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 subjects/border_cross/README.md

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+## vehicles
+
+### Instructions
+
+- Create the trait Vehicle with the model and year
+
+- In a border cross you want to keep a list of all the vehicles that are waiting to enter the country. You want to keep a waiting list of the vehicle but the vehicles can be of two types: Car or Truck
+
+- Create a function that receives a vector of structures that implements the Vehicle trait and returns all the models.
+
+With the following structure:
+
+### Expected Functions and Structures
+
+```rust
+#[allow(dead_code)]
+pub struct Car<'a> {
+	pub plate_nbr: &'a str,
+	pub model: &'a str,
+	pub horse_power: u32,
+	pub year: u32,
+}
+
+#[allow(dead_code)]
+pub struct Truck<'a> {
+	pub plate_nbr: &'a str,
+	pub model: &'a str,
+	pub horse_power: u32,
+	pub year: u32,
+	pub load_tons: u32,
+}
+
+pub trait Vehicle {
+	fn model(&self) -> &str;
+	fn year(&self) -> u32;
+}
+
+impl Vehicle for Truck<'_> {
+}
+
+impl Vehicle for Car<'_> {
+}
+
+fn all_models(list: Vec<&Vehicle>) -> Vec<&str> {
+}
+```
+
+### Usage
+
+Here is a program to test your function.
+
+```rust
+fn main() {
+	let vehicles: Vec</*there is something missing here*/Vehicle> = vec![
+		&Car {
+			plate_nbr: "A3D5C7",
+			model: "Model 3",
+			horse_power: 325,
+			year: 2010,
+		},
+		&Truck {
+			plate_nbr: "V3D5CT",
+			model: "Ranger",
+			horse_power: 325,
+			year: 2010,
+			load_tons: 40,
+		},
+	];
+	println!("{:?}", all_models(vehicles));
+}
+```
+
+And its output
+
+```console
+student@ubuntu:~/[[ROOT]]/test$ cargo run
+["Model 3", "Ranger"]
+student@ubuntu:~/[[ROOT]]/test$
+```