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This is what I came up with. If there is a better way, let me know.
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Method 1: Using substring : It returns the substring starting from startIndex inclusive and ending at endIndex exclusive. We can remove the last character of a string using this method by providing the start index as 0 and end index as string-length - 1.
substring(2, error. length()-1)) to remove first and last brackets!
slice() method to remove the last 3 characters from a string, e.g. const withoutLast3 = str. slice(0, -3); . The slice method will return a new string that doesn't contain the last 3 characters of the original string.
It returns the substring starting from startIndex inclusive and ending at endIndex exclusive. We can remove the last character of a string using this method by providing the start index as 0 and end index as string-length - 1. For example, if the string is hello and if we pass the start index as 0 and end index as 4, it will return hell.
We will use RegEx expression to remove special characters from String in Dart or Flutter. How to Remove Special Characters and Get Alphabets and Numbers? Here, we have string "str" with special characters, alphabets, numbers. We have used the replaceAll () method on string with RegEx expression to remove the special characters.
Dart provides one method called substring that returns one substring from a string. This method is defined as below : Here, startIndex is the starting index of the string that we will get the substring from. endIndex is optional. If we don’t provide it, it will take the substring to the end of the given string.
The StringBuffer class provides a method deleteCharAt (). The method deletes a character from the specified position. We use the method to remove a character from a string in Java.
Remove last character:
if (str != null && str.length > 0) {
str = str.substring(0, str.length - 1);
}
Remove last 5 characters:
if (str != null && str.length >= 5) {
str = str.substring(0, str.length - 5);
}
The answer that you have given would suffice the problem, just wanted to share this another way to remove the last element. Here I am using removeLast function provided by the dart library.
This function can be used on any list to remove the last element.
void main() {
String x = "aaabcd";
List<String> c = x.split(""); // ['a', 'a', 'a', 'b', 'c', 'd']
c.removeLast(); // ['a', 'a', 'a', 'b', 'c']
print(c.join()); //aaabc
}
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