added dart language,category,snippets

snippets/dart/array-manipulation/even-filter.md

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+---
+title: Filter a List
+description: Filters a list to include only even numbers.
+author: Vrindtime
+tags: dart,collections,list,utility
+---
+
+```dart
+final numbers = [1, 2, 3, 4, 5, 6];
+final evens = numbers.where((n) => n.isEven).toList();
+print(evens); // Prints [2, 4, 6]
+```

snippets/dart/array-manipulation/find-index.md

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+---
+title: Find Index of an Element
+description: Finds and prints the index of a specific element in an array.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [10, 20, 30, 40, 50];
+final index = numbers.indexOf(30);
+print(index); // Prints 2
+```

snippets/dart/array-manipulation/max-value.md

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+---
+title: Find Maximum in an Array
+description: Finds and prints the maximum value in an array.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [3, 7, 2, 9, 4];
+final maxNumber = numbers.reduce((a, b) => a > b ? a : b);
+print(maxNumber); // Prints 9
+```

snippets/dart/array-manipulation/remove-duplicate.md

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+---
+title: Remove Duplicates from an Array
+description: Removes duplicate elements from an array and prints the result.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [1, 2, 2, 3, 4, 4, 5];
+final uniqueNumbers = numbers.toSet().toList();
+print(uniqueNumbers); // Prints [1, 2, 3, 4, 5]
+```

snippets/dart/array-manipulation/remove-element.md

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+---
+title: Remove Specific Element from an Array
+description: Removes a specific element from an array and prints the result.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [1, 2, 3, 4, 5];
+numbers.remove(3);
+print(numbers); // Prints [1, 2, 4, 5]
+```

snippets/dart/array-manipulation/reverse-array.md

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+---
+title: Reverse an Array
+description: Reverses an array and prints the result.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [1, 2, 3, 4, 5];
+final reversed = numbers.reversed.toList();
+print(reversed); // Prints [5, 4, 3, 2, 1]
+```

snippets/dart/array-manipulation/shuffle-array.md

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+---
+title: Shuffle an Array
+description: Randomly shuffles the elements of an array and prints the result.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [1, 2, 3, 4, 5];
+numbers.shuffle(Random());
+print(numbers); // Prints the array in random order
+```

snippets/dart/array-manipulation/sort-array.md

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+---
+title: Sort an Array
+description: Sorts an array in ascending order and prints it.
+author: Vrindtime
+tags: dart,array-manipulation,utility
+---
+
+```dart
+final numbers = [5, 1, 8, 3, 2];
+numbers.sort();
+print(numbers); // Prints [1, 2, 3, 5, 8]
+```

snippets/dart/basics/hello-world.md

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+---
+title: Hello, World!
+description: Prints Hello, World! to the terminal.
+author: Vrindtime
+tags: dart,printing,hello-world,utility
+---
+
+```dart
+print("Hello, World!"); // Prints Hello, World! to the console
+```

snippets/dart/date-and-time/add-duration.md

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+---
+title: Add Duration to DateTime
+description: Adds a specified duration to a DateTime object and prints the result.
+author: Vrindtime
+tags: dart,date-time,utility
+---
+
+```dart
+final now = DateTime.now();
+final future = now.add(Duration(days: 7,hours: 10,minutes: 5,seconds: 2,microseconds: 100,milliseconds: 50));
+print(future); // Prints the date and time 7 days, 10 hours, 5 minutes, 2 seconds, 100 microseconds and 50 miliseconds from now
+```

snippets/dart/date-and-time/format-date.md

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+---
+title: Format DateTime
+description: Formats a DateTime object into a human-readable string.
+author: Vrindtime
+tags: dart,date-time,utility
+---
+
+```dart
+final now = DateTime.now();
+final formattedDate = DateFormat('yyyy-MM-dd – kk:mm').format(now);
+print(formattedDate); // Prints the formatted date, e.g., "2025-01-01 – 14:35"
+```

snippets/dart/date-and-time/get-date-time.md

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+---
+title: Get Current Date and Time
+description: Retrieves and prints the current date and time.
+author: Vrindtime
+tags: dart,date-time,utility
+---
+
+```dart
+final now = DateTime.now();
+print(now); // Prints the current date and time
+```

snippets/dart/date-and-time/string-to-date.md

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+---
+title: Parse Date from String
+description: Parses a date string into a DateTime object and prints it.
+author: Vrindtime
+tags: dart,date-time,utility
+---
+
+```dart
+final dateString = "2025-01-01 15:30:00";
+final parsedDate = DateTime.parse(dateString);
+print(parsedDate); // Prints "2025-01-01 15:30:00.000"
+```

snippets/dart/date-and-time/time-difference.md

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+---
+title: Calculate Time Difference
+description: Calculates the difference between two DateTime objects in days, hours, and minutes.
+author: Vrindtime
+tags: dart,date-time,utility
+---
+
+```dart
+final start = DateTime(2025, 1, 1, 12, 0);
+final end = DateTime(2025, 1, 2, 14, 30);
+final difference = end.difference(start);
+print('Days: ${difference.inDays}, Hours: ${difference.inHours}, Minutes: ${difference.inMinutes}'); 
+// Prints "Days: 1, Hours: 26, Minutes: 1590"
+```

snippets/dart/file-manipulation/append-to-file.md

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+---
+title: Append to a File
+description: Appends text to an existing file and prints a confirmation.
+author: Vrindtime
+tags: dart,file-manipulation,io,utility
+---
+
+```dart
+final file = File('example.txt');
+await file.writeAsString('Appended text.', mode: FileMode.append); //remember to use aync modifier in the function
+print('Text appended successfully.');
+```

snippets/dart/file-manipulation/delete-file.md

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+---
+title: Delete a File
+description: Deletes a specified file and prints a confirmation.
+author: Vrindtime
+tags: dart,file-manipulation,io,utility
+---
+
+```dart
+final file = File('example.txt');
+if (await file.exists()) {
+   await file.delete(); //remember to use aync modifier in the function
+   print('File deleted successfully.');
+} else {
+   print('File does not exist.');
+}
+```

snippets/dart/file-manipulation/list-files-directory.md

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+---
+title: List Files in a Directory
+description: Lists all files in a directory and prints their names.
+author: Vrindtime
+tags: dart,file-manipulation,io,utility
+---
+
+```dart
+final directory = Directory.current;
+final files = directory.listSync();
+for (var file in files) {
+  print(file.path); // Prints the paths of all files and directories
+}
+```

snippets/dart/file-manipulation/read-file.md

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+---
+title: Read a File
+description: Reads the content of a file and prints it to the console.
+author: Vrindtime
+tags: dart,file-manipulation,io,utility
+---
+
+```dart
+final file = File('example.txt');
+final content = await file.readAsString();
+print(content); // Prints the content of the file
+```

snippets/dart/file-manipulation/write-file.md

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+---
+title: Write to a File
+description: Writes text to a file and prints a confirmation.
+author: Vrindtime
+tags: dart,file-manipulation,io,utility
+---
+
+```dart
+final file = File('example.txt');
+await file.writeAsString('Hello, Dart!'); //remember to use aync modifier in the function
+print('File written successfully.');
+```

snippets/dart/string-manipulation/contain-string.md

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+---
+title: Check if String Contains Substring
+description: Checks if a string contains a specific substring and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'Learning Dart is fun!';
+final contains = input.contains('Dart');
+print(contains); // Prints true
+```

snippets/dart/string-manipulation/convert-to-uppercase.md

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+---
+title: Convert to Uppercase
+description: Converts a string to uppercase and prints it.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final original = "hello, world!";
+final uppercased = original.toUpperCase();
+print(uppercased); // Prints "HELLO, WORLD!"
+```

snippets/dart/string-manipulation/count-character.md

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+---
+title: Count Characters in a String
+description: Counts the number of characters in a string and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'Dart';
+final length = input.length;
+print(length); // Prints 4
+```

snippets/dart/string-manipulation/extract-substring.md

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+---
+title: Extract Substring
+description: Extracts a portion of a string and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'Hello, Dart!';
+final substring = input.substring(7, 11);
+print(substring); // Prints 'Dart'
+```

snippets/dart/string-manipulation/isString-palindrome.md

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+---
+title: Check if a String is a Palindrome
+description: Checks if a string is a palindrome and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'madam';
+final isPalindrome = input == input.split('').reversed.join('');
+print(isPalindrome); // Prints true
+```

snippets/dart/string-manipulation/replace-substring.md

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+---
+title: Replace Substring
+description: Replaces all occurrences of a substring with another substring and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'Dart is great!';
+final replaced = input.replaceAll('great', 'awesome');
+print(replaced); // Prints 'Dart is awesome!'
+```

snippets/dart/string-manipulation/reverse-string.md

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+---
+title: Reverse a String
+description: Reverses a string and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'Dart';
+final reversed = input.split('').reversed.join('');
+print(reversed); // Prints 'traD'
+```

snippets/dart/string-manipulation/split-string.md

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+---
+title: Split String by Delimiter
+description: Splits a string into a list of substrings using a delimiter and prints the result.
+author: Vrindtime
+tags: dart,string-manipulation,utility
+---
+
+```dart
+final input = 'apple,banana,cherry';
+final fruits = input.split(',');
+print(fruits); // Prints [apple, banana, cherry]
+```