dart
Dart string splitMapJoin examples
splitMapJoin is an utility method of dart string. It is used to split a string, convert its part and join the parts back to a new string.
ReadDart program to capitalize the first character of a string
Dart doesn't provide any inbuilt method to capitalize the first string character. We can either write our own utility function or we can use the intl package. In this blog post, I will show you two different ways to capitalize the first letter of a dart string.
ReadHow to do run-time type checking in Dart
If we are not declaring the type of a variable, we can assign any type to it. The compiler will not throw any error. Only in run-time, we will get type-mismatched.
ReadWhat are mixins in Dart
Dart 2.1 introduced one new concept called mixins. In simple words, this is a class that contains methods that can be used by other classes. So, don't we have already inheritance ? We can extend one class, right ? We can have one abstract class and extend it. So, why mixins ?
ReadGenerics in Dart explanation with example
Generic is a concept to use different types of values with a single type of definition. For example, we can create different types of lists in dart like List is for a string list, List is for an integer list etc. Here, List is a generic type. If you check its definition, you will see that it is defined as List. Here, E letter stands for element. By convention letter E, T, S, K and V are used for generic. For example, map class is defined as Map<K, V>.Map, Set, List and Queue are examples of generic implementation.
ReadEnumeration in Dart explanation with example
Enumeration is an user defined list of constants values. This is a class and also known as enums or enumerated types. Enums are normally used in switch-case blocks. If you are familiar with enums in any other programming languages like Java, enums in Dart is similar to that.
ReadImplicit interface in Dart with examples
Dart doesn't have any interface keyword to define an interface. In Dart, each class implicitly defines an interface. This interface holds all the instance members of the class and of any other classes it implements.
ReadDart class inheritance : extends and override
Class inheritance allows one class to inherit properties of a different class. Dart supports single inheritance i.e. one class can inherit from only one class. extends keyword is used for inheritance. The syntax of extends is :.
ReadAbstract method and abstract class in Dart
A class can be abstract or a method can be abstract in Dart. 'abstract' keyword is used to declare an Abstract class. An abstract can't be instantiated or we can't create any objects of abstract class. So, what is its use case ? You can only extend an abstract class.
ReadInstance method in Dart with examples
In simple words, instance methods are methods defined in a class those are available with class objects. Instance methods can access to instance variables and this. For example, let's consider the below program :.
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