starting day17 solution

2018/day17/Cargo.lock

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+[[package]]
+name = "day17"
+version = "0.1.0"
+

2018/day17/Cargo.toml

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+[package]
+name = "day17"
+version = "0.1.0"
+authors = ["Andrew Coleman <penguincoder@gmail.com>"]
+edition = "2018"
+
+[dependencies]

2018/day17/src/main.rs

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+use std::collections::VecDeque;
+use std::fs::File;
+use std::io::{BufRead, BufReader};
+use std::ops::Range;
+
+const MapSize: usize = 1800;
+type Map = [[char; MapSize]; MapSize];
+
+fn find_range_in_line(line: &str) -> (Range<u16>, Range<u16>) {
+    let mut parts = line.split(", ");
+    let mut left_parts = parts.nth(0).unwrap().split("=");
+    let left_coord_type: &str = left_parts.nth(0).unwrap();
+    let left_number: u16 = left_parts.nth(0).unwrap().parse().unwrap();
+    let mut right_parts = parts.nth(0).unwrap().split("=");
+    let mut right_numbers = right_parts.nth(1).unwrap().split("..");
+    let right_number_1: u16 = right_numbers.nth(0).unwrap().parse().unwrap();
+    let right_number_2: u16 = right_numbers.nth(0).unwrap().parse().unwrap();
+    let left_range = Range { start: left_number, end: left_number + 1 };
+    let right_range = Range { start: right_number_1, end: right_number_2 + 1 };
+    if left_coord_type == "x" {
+        (left_range, right_range)
+    } else {
+        (right_range, left_range)
+    }
+}
+
+fn build_map_from_file(filename: &str) -> Map {
+    let lines: Vec<String> = BufReader::new(File::open(filename).unwrap())
+        .lines()
+        .map(|line| line.unwrap())
+        .collect();
+    let mut min_y = MapSize;
+    let mut max_y = 0;
+    let mut m: Map = [[' '; MapSize]; MapSize];
+    m[500][0] = '+';
+    for line in lines.iter() {
+        let (x_range, y_range) = find_range_in_line(line.as_str());
+    }
+    m
+}
+
+fn main() {
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn test_range_from_line() {
+        let line = "x=100, y=100..102";
+        let (x_range, y_range) = find_range_in_line(line);
+        assert_eq!(x_range, (100..101));
+        assert_eq!(y_range, (100..103));
+    }
+}

2018/day17/test-input

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+x=495, y=2..7
+y=7, x=495..501
+x=501, y=3..7
+x=498, y=2..4
+x=506, y=1..2
+x=498, y=10..13
+x=504, y=10..13
+y=13, x=498..504