From a84450fc231dfd6859ee39d2f41c02c97f370596 Mon Sep 17 00:00:00 2001
From: JOLIMAITRE Matthieu <matthieu@imagevo.fr>
Date: Sat, 15 Jun 2024 01:28:46 +0200
Subject: [PATCH] add range class

---
 src/lib.ts       |  3 ++-
 src/lib/Range.ts | 27 +++++++++++++++++++++++++++
 src/lib/utils.ts |  4 ----
 3 files changed, 29 insertions(+), 5 deletions(-)
 create mode 100644 src/lib/Range.ts

diff --git a/src/lib.ts b/src/lib.ts
index 8d587e0..16a6083 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -3,8 +3,9 @@ export type { Arr, ClassOf, Constructible, Function, InstanceOf, KeyOfType, Tail
 
 // functions
 export { all, enumerate, filter, filter_map, it, Iter, map, zip } from "./lib/iter.ts";
-export { log_from, next, range, split_promise, wait } from "./lib/utils.ts";
+export { log_from, next, split_promise, wait } from "./lib/utils.ts";
 
 // Structures
 export { Chain } from "./lib/Chain.ts";
 export { Channel } from "./lib/Channel.ts";
+export { Range, range } from "./lib/Range.ts";
diff --git a/src/lib/Range.ts b/src/lib/Range.ts
new file mode 100644
index 0000000..ddbe806
--- /dev/null
+++ b/src/lib/Range.ts
@@ -0,0 +1,27 @@
+export class Range {
+	from;
+	to;
+
+	constructor(from: number, to: number) {
+		this.from = from;
+		this.to = to;
+	}
+
+	*[Symbol.iterator](): Generator<number, void, void> {
+		let index = this.from;
+		while (index < this.to) yield index++;
+	}
+
+	includes(n: number) {
+		return (n > this.from) && (n < this.to);
+	}
+}
+
+export function range(from: number, to: number) {
+	return new Range(from, to);
+}
+
+Deno.test("range", async () => {
+	const { assertEquals } = await import("https://deno.land/std@0.224.0/assert/assert_equals.ts");
+	assertEquals([...range(0, 4)], [0, 1, 2, 3]);
+});
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 0119f50..38eadea 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -18,10 +18,6 @@ export function next<T>(iterator: Iterator<T>) {
 	else return result as T;
 }
 
-export function* range(from: number, to: number) {
-	while (from < to) yield from++;
-}
-
 /**
  * usage:
  * ```ts