Use anyhow for erro handling

Cargo.toml

@@ -2,7 +2,7 @@
 authors = ['J2ghz <j2.00ghz@gmail.com>']
 categories = ['command-line-utilities']
 description = 'Generates images from rtl_power csv files'
-edition = '2018'
+edition = '2021'
 exclude = ['samples/*']
 keywords = [
   'sdr',
@@ -15,6 +15,10 @@ readme = 'README.md'
 repository = 'https://github.com/j2ghz/sdr-heatmap/'
 version = '0.1.5'
 
+[profile.release]
+codegen-units = 1
+lto = "fat"
+
 [[bench]]
 harness = false
 name = 'bench'
@@ -27,14 +31,14 @@ test-generator = "0.3"
 [dependencies]
 anyhow = "1.0"
 arrayvec = "0.7"
-clap = '2.33.3'
-csv = '1.1.6'
-flate2 = '1.0.19'
-image = '0.23.12'
+clap = '2.33'
+csv = '1.1'
+flate2 = '1.0'
+image = '0.23'
 itertools = "0.10"
-log = '0.4.11'
-rayon = '1.5.0'
-stderrlog = '0.5.0'
+log = '0.4'
+rayon = '1.5'
+stderrlog = '0.5'
 structopt = "0.3"
-walkdir = '2'
-webp = "0.1.2"
+walkdir = '2.3'
+webp = "0.2"

benches/bench.rs

@@ -49,7 +49,7 @@ fn get_test_files() -> std::vec::Vec<std::path::PathBuf> {
 fn preprocess_bench(c: &mut Criterion) {
     let mut group = c.benchmark_group("preprocess implementations");
     for file in get_test_files().iter() {
-        let size = get_file_size(&file);
+        let size = get_file_size(file);
         group.throughput(Throughput::Bytes(size));
         group.bench_with_input(
             BenchmarkId::new("basic", file.display()),
@@ -58,7 +58,7 @@ fn preprocess_bench(c: &mut Criterion) {
                 b.iter_with_large_setup(
                     || read_file_to_memory(file),
                     |data| {
-                        let summary = preprocess(data);
+                        let summary = preprocess(data).unwrap();
                         black_box(summary);
                     },
                 )
@@ -71,7 +71,7 @@ fn preprocess_bench(c: &mut Criterion) {
                 b.iter_with_large_setup(
                     || read_file_to_memory(file),
                     |data| {
-                        let summary = preprocess_iter(data);
+                        let summary = preprocess_iter(data).unwrap();
                         black_box(summary);
                     },
                 )
@@ -85,7 +85,7 @@ fn preprocess_bench(c: &mut Criterion) {
 fn process_bench(c: &mut Criterion) {
     let mut group = c.benchmark_group("process implementations");
     for file in get_test_files().iter() {
-        let size = get_file_size(&file);
+        let size = get_file_size(file);
         group.throughput(Throughput::Bytes(size));
         group.bench_with_input(
             BenchmarkId::new("basic", file.display()),
@@ -107,7 +107,7 @@ fn process_bench(c: &mut Criterion) {
                 b.iter_with_large_setup(
                     || read_csv_to_memory(file),
                     |data| {
-                        let summary = process_iter(data, -1000.0, 1000.0, 1);
+                        let summary = process_iter(data, -1000.0, 1000.0, 1).unwrap();
                         black_box(summary);
                     },
                 )