Use named parameters

Author: olexale

example/main.dart

@@ -0,0 +1,12 @@
+import 'package:hashids2/hashids2.dart';
+
+void main() {
+  final hashids = HashIds(
+    salt: 'this is my salt',
+    minHashLength: 8,
+    alphabet: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890',
+  );
+  final id = hashids.encode([1, 2, 3]);
+  final numbers = hashids.decode(id);
+  print(numbers);
+}

lib/hashids2.dart

@@ -2,9 +2,9 @@ import 'dart:core';
 
 class HashIds {
   HashIds(
-      [String salt = DEFAULT_SALT,
+      {String salt = DEFAULT_SALT,
       int minHashLength = DEFAULT_MIN_HASH_LENGTH,
-      String alphabet = DEFAULT_ALPHABET]) {
+      String alphabet = DEFAULT_ALPHABET}) {
     this.salt = salt != null ? salt : DEFAULT_SALT;
     this.minHashLength =
         minHashLength > 0 ? minHashLength : DEFAULT_MIN_HASH_LENGTH;

test/all_test.dart

@@ -6,10 +6,8 @@ import 'custom_salt.dart';
 import 'default_params.dart';
 import 'default_params_hex.dart';
 import 'encode_types.dart';
-import 'sample.dart';
 
 void main() {
-  sampleTest();
   badInputTest();
   customSaltTest();
   customAlphabetTest();

test/bad_input.dart

@@ -5,15 +5,15 @@ void badInputTest() {
   group('bad input', () {
     test('should throw an error when small alphabet', () {
       try {
-        HashIds('', 0, '1234567890');
+        HashIds(alphabet: '1234567890');
       } catch (e) {
         expect(1, 1);
       }
     });
 
     test('should throw an error when alphabet has spaces', () {
       try {
-        HashIds('', 0, 'a cdefghijklmnopqrstuvwxyz');
+        HashIds(alphabet: 'a cdefghijklmnopqrstuvwxyz');
       } catch (e) {
         expect(1, 1);
       }

test/custom_alphabet.dart

@@ -3,7 +3,7 @@ import 'package:test/test.dart';
 
 void customAlphabetTest() {
   final testAlphabet = (String alphabet) {
-    final hashids = HashIds('', 0, alphabet);
+    final hashids = HashIds(alphabet: alphabet);
     final numbers = [1, 2, 3];
 
     final id = hashids.encode(numbers);

test/custom_params.dart

@@ -4,7 +4,9 @@ import 'package:test/test.dart';
 void customParamsTest() {
   const minLength = 30;
   final hashids = HashIds(
-      'this is my salt', minLength, 'xzal86grmb4jhysfoqp3we7291kuct5iv0nd');
+      salt: 'this is my salt',
+      minHashLength: minLength,
+      alphabet: 'xzal86grmb4jhysfoqp3we7291kuct5iv0nd');
 
   final map = {
     'nej1m3d5a6yn875e7gr9kbwpqol02q': [0],

test/custom_params_hex.dart

@@ -4,7 +4,9 @@ import 'package:test/test.dart';
 void customParamsHexTest() {
   const minLength = 30;
   final hashids = HashIds(
-      'this is my salt', minLength, 'xzal86grmb4jhysfoqp3we7291kuct5iv0nd');
+      salt: 'this is my salt',
+      minHashLength: minLength,
+      alphabet: 'xzal86grmb4jhysfoqp3we7291kuct5iv0nd');
 
   final map = {
     '0dbq3jwa8p4b3gk6gb8bv21goerm96': 'deadbeef',

test/custom_salt.dart

@@ -3,7 +3,7 @@ import 'package:test/test.dart';
 
 void customSaltTest() {
   final testSalt = (String salt) {
-    final hashIds = HashIds(salt);
+    final hashIds = HashIds(salt: salt);
     final numbers = [1, 2, 3];
 
     final id = hashIds.encode(numbers);

test/min_length.dart

@@ -4,7 +4,7 @@ import 'package:test/test.dart';
 void minLengthTest() {
   group('min length', () {
     final testMinLength = (int minLength) {
-      final hashids = HashIds('', minLength);
+      final hashids = HashIds(minHashLength: minLength);
       final numbers = [1, 2, 3];
 
       final id = hashids.encode(numbers);