In this Dart programming tutorial, we dive into the world of string methods, focusing on two fundamental ones: toUpperCase() and toLowerCase(). These methods allow you to convert strings to uppercase or lowercase, respectively, without altering the original string, highlighting the immutability of strings in Dart. We'll explore practical examples, applying these methods to a variety of scenarios, from simple text transformations to filtering out inappropriate language in chat applications. Join us on this journey to harness the power of string manipulation in Dart and elevate your coding skills!
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1- length: Returns the length of the string.
2- isEmpty: Checks if the string is empty.
3- contains: Checks if a substring is present in the string.
4- substring: Extracts a portion of the string.
5- toUpperCase and toLowerCase: Converts the string to uppercase or lowercase, respectively.
6- trim and trimLeft and trimRight: Removes leading and trailing whitespace from the string.
7- replaceAll and replaceFirst: Replaces occurrences of a substring with another.
8- startsWith and endsWith: Checks if the string starts or ends with a specific substring.
9- compareTo: Compares two strings lexicographically.
10- indexOf and lastIndexOf: Returns the index of the first or last occurrence of a substring.
11- padLeft and padRight: Pads the string with a specific character to a given width.
12- containsAll: Checks if the string contains all the specified substrings.
13- codeUnitAt: Returns the Unicode code point of the character at a specified index.
14- endsWith: Checks if the string ends with a specific suffix.
15- startsWith: Checks if the string starts with a specific prefix.
16- replaceFirst: Replaces the first occurrence of a substring with another substring.
This is the link of the documetn for all string method from flutter team:
https://api.dart.dev/stable/3.0.6/dar...
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