From fa3628c73363cd0502e932efb052b866d96e4752 Mon Sep 17 00:00:00 2001
From: shang1219178163 <shang1219178163@gmail.com>
Date: Mon, 6 Mar 2023 18:19:47 +0800
Subject: [PATCH] add length and Type judgment

---
 lib/tuple.dart | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/lib/tuple.dart b/lib/tuple.dart
index b1ab9de..41ec81b 100644
--- a/lib/tuple.dart
+++ b/lib/tuple.dart
@@ -55,6 +55,8 @@ class Tuple2<T1, T2> {
   List toList({bool growable = false}) =>
       List.from([item1, item2], growable: growable);
 
+  int get length => 2;
+
   @override
   String toString() => '[$item1, $item2]';
 
@@ -105,6 +107,8 @@ class Tuple3<T1, T2, T3> {
   List toList({bool growable = false}) =>
       List.from([item1, item2, item3], growable: growable);
 
+  int get length => 3;
+
   @override
   String toString() => '[$item1, $item2, $item3]';
 
@@ -170,6 +174,8 @@ class Tuple4<T1, T2, T3, T4> {
   List toList({bool growable = false}) =>
       List.from([item1, item2, item3, item4], growable: growable);
 
+  int get length => 4;
+
   @override
   String toString() => '[$item1, $item2, $item3, $item4]';
 
@@ -243,6 +249,8 @@ class Tuple5<T1, T2, T3, T4, T5> {
   List toList({bool growable = false}) =>
       List.from([item1, item2, item3, item4, item5], growable: growable);
 
+  int get length => 5;
+
   @override
   String toString() => '[$item1, $item2, $item3, $item4, $item5]';
 
@@ -330,6 +338,8 @@ class Tuple6<T1, T2, T3, T4, T5, T6> {
   List toList({bool growable = false}) =>
       List.from([item1, item2, item3, item4, item5, item6], growable: growable);
 
+  int get length => 6;
+
   @override
   String toString() => '[$item1, $item2, $item3, $item4, $item5, $item6]';
 
@@ -440,6 +450,8 @@ class Tuple7<T1, T2, T3, T4, T5, T6, T7> {
       List.from([item1, item2, item3, item4, item5, item6, item7],
           growable: growable);
 
+  int get length => 7;
+
   @override
   String toString() =>
       '[$item1, $item2, $item3, $item4, $item5, $item6, $item7]';
@@ -466,3 +478,13 @@ class Tuple7<T1, T2, T3, T4, T5, T6, T7> {
         item7.hashCode
       ]);
 }
+
+
+bool isTuple(dynamic obj) {
+  return obj is Tuple2 ||
+      obj is Tuple3 ||
+      obj is Tuple4 ||
+      obj is Tuple5 ||
+      obj is Tuple6 ||
+      obj is Tuple7;
+}
\ No newline at end of file