Merge pull request #90 from GIHAA/feat-startsWith

Feat: added starts_with under the string manipulation

packages/flodash/lib/modules/string/main.dart

@@ -11,5 +11,6 @@ export 'unescape.dart';
 export 'uppercase.dart';
 export 'trim_end.dart';
 export 'trim_start.dart';
+export 'starts_with.dart';
 export 'to_lower.dart';
-export 'to_upper.dart';
+export 'to_upper.dart';

packages/flodash/lib/modules/string/starts_with.dart

@@ -0,0 +1,17 @@
+///Checks if string starts with the given target string.
+///
+/// Arguments
+///
+/// - string (String): The string to be checked.
+/// - target (String): The target string that is expected to be at the beginning of the given string.
+/// - position (int): Optional parameter specifying the starting position in the given string to begin the comparison. Defaults to 0
+/// 
+/// Returns
+///
+/// - (Boolean): Returns true if the string starts with the target string at the specified position; otherwise, returns false
+
+
+@Deprecated('The function startsWith() is deprecated. Use the built-in startsWith() method instead.')
+bool startsWith(String string, String target, [int position = 0]) {
+  return string.startsWith(target, position);
+}

packages/flodash/test/modules/string/starts_with_test.dart

@@ -0,0 +1,24 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:flodash/flodash.dart' as flodash;
+
+void main() {
+  test('should return true if the string starts with the target', () {
+    String string = 'abc';
+    String target = 'a';
+    bool result = flodash.startsWith(string, target);
+    expect(result, true);
+  });
+  test('should return false if the string does not start with the target', () {
+    String string = 'abc';
+    String target = 'b';
+    bool result = flodash.startsWith(string, target);
+    expect(result, false);
+  });
+  test('should return true if the string starts with the target at the specified position', () {
+    String string = 'abc';
+    String target = 'b';
+    int position = 1;
+    bool result = flodash.startsWith(string, target, position);
+    expect(result, true);
+  });
+}