Learn Kotlin

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Kotlin is a programming language introduced by JetBrains, the official designer of the most intelligent Java IDE, named Intellij IDEA. This is a strongly statically typed language that runs on JVM. In 2017, Google announced Kotlin is an official language for android development. Kotlin is an open source programming language that combines object-oriented programming and functional features into a unique platform. The content is divided into various chapters that contain related topics with simple and useful examples.

Reasons of of using Kotlin 

Here, are some important reasons why Kotlin is used widely: 

  • Kotlin is a statically-typed language which is very easy to read and write.
  • Kotlin programs do not require semicolons in their program. This makes the code easy and more readbale. 
  • This languare allows exchange and use of information from Java in various ways. Moreover, Java and Kotlin code can co-exist in the same project.
  • Kotlin’s type system is aimed to eliminate NullPointerException from the code.
  • It’ll take you less time to write new code in Kotlin. It’s even easier to deploy kotlin code and to maintain it at scale.

Features of Kotlin

Here are a few features of the Kotlin that will make you sure of the progress path of the programming language. 

Trimmed Coding:

Kotlin is an OOPs-based programming language where code line can be trimmed up to 40 % that which makes Kotlin an ideal choice for software or web development. 

Open-Source:

Kotlin utilizes JVM and combines the features of OOPs and functional-oriented programming. 

Fast Compilation:

it is easy to compile the code when working with Kotlin that results in better performance for android development, and it will also explain which type of data function can be used in the entire code. 

Extension Functions:

Kotlin can support a variety of extension functions without making any changes to the code. it helps in making existing code more appealing and magnificent for developers. 

For Example:

Fun String.removeFirstLastChar():
String = this.substring(1, this.length -1)

This code will assist in trimming down the first and the last character of the string, we can apply it as: 

Val string1 = "Today is cloudy."
Val string2 = string1.removeFirstLastChar()

Null Safety:

In Kotlin, the system distinguishes between null references and not null references. 

For example, a String variable cannot hold null: 

Var string1: String = "Today is Sunday"
String1 = null  // compilation error
To permit null, we can adjoin the nullable variable :
Var string2: String? = "Today is Sunday"
String2 = null
print(string2)

Interoperable: 

Kotlin code can be used by Java, and Java codes can be used with Kotlin. So, if you have knowledge about OOPS programming, it is easy to switch to Kotlin’s development. Also, if there are some applications written in Java, then they can be used with Kotlin’s environment. 

Robust Tools:

Like Java, Kotlin code can also be written using IDE or using the command-line interface. It is easy to work with IDE, and syntax errors are also reduced dramatically. At the same time, when you are working with a command-line interface, code has to be compiled first. 

Smart Cast: 

Smart casting basically helps to cut down the application costs and improves its speed or performance. It works on managing the efficiency of code using type casting or immutable values. 

For example, if the string is identified, then it’s length and count and can be found with the help of Smart Cast function: 

Val string1: Any = "Today is Monday"
when(string1)
{
is String  -> string1.length
Is Int -> string1.inc()
}

Low Cost of Adoption:

Reasons of of using Kotlin 

Here, are some important reasons why Kotlin is used widely: 

  • Kotlin is a statically-typed language which is very easy to read and write.
  • Kotlin programs do not require semicolons in their program. This makes the code easy and more readbale. 
  • This languare allows exchange and use of information from Java in various ways. Moreover, Java and Kotlin code can co-exist in the same project.
  • Kotlin’s type system is aimed to eliminate NullPointerException from the code.
  • It’ll take you less time to write new code in Kotlin. It’s even easier to deploy kotlin code and to maintain it at scale.

Features of Kotlin

Here are a few features of the Kotlin that will make you sure of the progress path of the programming language. 

Trimmed Coding:

Kotlin is an OOPs-based programming language where code line can be trimmed up to 40 % that which makes Kotlin an ideal choice for software or web development. 

Open-Source:

Kotlin utilizes JVM and combines the features of OOPs and functional-oriented programming. 

Fast Compilation:

it is easy to compile the code when working with Kotlin that results in better performance for android development, and it will also explain which type of data function can be used in the entire code. 

Extension Functions:

Kotlin can support a variety of extension functions without making any changes to the code. it helps in making existing code more appealing and magnificent for developers. 

For Example:

Fun String.removeFirstLastChar():
String = this.substring(1, this.length -1)

This code will assist in trimming down the first and the last character of the string, we can apply it as: 

Val string1 = "Today is cloudy."
Val string2 = string1.removeFirstLastChar()

Null Safety:

In Kotlin, the system distinguishes between null references and not null references. 

For example, a String variable cannot hold null: 

Var string1: String = "Today is Sunday"
String1 = null  // compilation error
To permit null, we can adjoin the nullable variable :
Var string2: String? = "Today is Sunday"
String2 = null
print(string2)

Interoperable: 

Kotlin code can be used by Java, and Java codes can be used with Kotlin. So, if you have knowledge about OOPS programming, it is easy to switch to Kotlin’s development. Also, if there are some applications written in Java, then they can be used with Kotlin’s environment. 

Robust Tools:

Like Java, Kotlin code can also be written using IDE or using the command-line interface. It is easy to work with IDE, and syntax errors are also reduced dramatically. At the same time, when you are working with a command-line interface, code has to be compiled first. 

Smart Cast: 

Smart casting basically helps to cut down the application costs and improves its speed or performance. It works on managing the efficiency of code using type casting or immutable values. 

For example, if the string is identified, then it’s length and count and can be found with the help of Smart Cast function: 

Val string1: Any = "Today is Monday"
when(string1)
{
is String  -> string1.length
Is Int -> string1.inc()
}

Low Cost of Adoption:

Kotlin is preferred by enterprises because of its lost cost of adoption. Most importantly, it is easy to learn by developers, especially having a programming background.

Kotlin is preferred by enterprises because of its lost cost of adoption. Most importantly, it is easy to learn by developers, especially having a programming background.

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