add: uuid module (equal; hash); guid module

.github/FUNDING.yml

@@ -0,0 +1 @@
+custom: ["https://icdevs.org/donations.html"]

README.md

@@ -13,6 +13,6 @@ UUID.toText(await g.new());
 // F253F1F0-2885-169F-169F-2885F253F1F0
 ```
 
-## ICDevs.org
+---
 
-This library was incentivized by https://ICDevs.org.  You can view more about the bounty at https://forum.dfinity.org/t/icdevs-org-bounty-4-uuid-motoko-library/8648 and https://icdevs.org/bounties/2021/11/17/UUID-motoko-library.html.  The bounty was funded by The Dragginz Team and the award was graciously donated by di-wu to the treasury of ICDevs.org so that we could pursue more bounties.  If you use this library and gain value from it, please consider a donation to ICDevs at https://icdevs.org/donations.html.
+This library was incentivized by [ICDevs](https://ICDevs.org).  You can view more about the bounty on the [forum](https://forum.dfinity.org/t/icdevs-org-bounty-4-uuid-motoko-library/8648) or [website](https://icdevs.org/bounties/2021/11/17/UUID-motoko-library.html). The bounty was funded by The Dragginz Team and the award was graciously donated by [di-wu](https://github.com/di-wu) to the treasury of ICDevs.org so that we could pursue more bounties. If you use this library and gain value from it, please consider a [donation](https://icdevs.org/donations.html) to ICDevs.

src/GUID.mo

@@ -0,0 +1,23 @@
+import Hex "mo:encoding/Hex";
+import Bool "mo:base/Bool";
+import Hash "mo:base/Hash";
+import Text "mo:base/Text";
+import Result "mo:base/Result";
+import UUID "UUID";
+
+module {
+    public type GUID = Text;
+    type UUID = UUID.UUID;
+
+    public func toUUID(guid : GUID) : UUID {
+        var tr = Text.replace(guid, #text("-"), "");
+        switch(Hex.decode(tr)){
+            case(#err(e)) {return []};
+            case(#ok(an8)) { return an8 };
+        };
+    };
+
+	public func equal(guid : GUID, guid2 : GUID): Bool = Text.equal(guid, guid2);
+	public func hash(guid : GUID): Hash.Hash = Text.hash(guid);
+
+};

src/UUID.mo

@@ -1,5 +1,12 @@
 import Hex "mo:encoding/Hex";
 import List "mo:base/List";
+import Bool "mo:base/Bool";
+import Array "mo:base/Array";
+import Nat8 "mo:base/Nat8";
+import Nat32 "mo:base/Nat32";
+import Hash "mo:base/Hash";
+import Text "mo:base/Text";
+import Buffer "mo:base/Buffer";
 
 module {
 	// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC 4122.
@@ -18,4 +25,16 @@ module {
 	    let (p3, xs3) = List.split(2, xs2);
 	    t # Hex.encode(List.toArray(p3)) # "-" # Hex.encode(List.toArray(xs3));
 	};
+
+	public func hash(uuid : UUID): Hash.Hash{ 
+		var buffer = Buffer.Buffer<Nat32>(16); //128 bit - 16 byte 
+		for(n8 in uuid.vals()){
+			var n = Nat8.toNat(n8);
+			var n32 = Nat32.fromNat(n);
+			buffer.add(n32);
+		};	
+		return Hash.hashNat8(buffer.toArray());
+	};
+
+	public func equal(uuid : UUID, uuid2 : UUID): Bool = Array.equal(uuid, uuid2, Nat8.equal);
 };