Kotlin Masterclass Programming Course: Android Coding Bible
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- Kotlin programming
- Android programming
- Mobile development
- Application programming
- Mobile design
- Semantics of general programming
- The format of coding applications
- All the functions of Kotlin programming
- Application programming
- Mobile programming
Variable refers to a memory location. It is used to store data. The data of variable can be changed and reused depending on condition or on information passed to the program.
In computer science, type conversion, type casting, and type coercion are different ways of changing an entity of one data type into another. An example would be the conversion of an integer value into a floating point value or its textual representation as a string, and vice versa.
Arithmetic operators. Arithmetic operators take numerical values (either literals or variables) as their operands and return a single numerical value. The standard arithmetic operators are addition (+), subtraction (-), multiplication (*), and division
In computer science, a relational operator is a programming language construct or operator that tests or defines some kind of relation between two entities. These include numerical equality (e.g., 5 = 5) and inequalities (e.g., 4 ≥ 3). ... Relational operators can be seen as special cases of logical predicates.
An assignment operator is the operator used to assign a new value to a variable, property, event or indexer element programming languages. Assignment operators can also be used for logical operations such as bitwise logical operations or operations on integral operands and Boolean operands.
A unary operation is an operation with only one operand, i.e. a single input. This is in contrast to binary operations, which use two operands. An example is the function f: A → A, where A is a set.
A bitwise operator is an operator used to perform bitwise operations on bit patterns or binary numerals that involve the manipulation of individual bits. Bitwise operators are used in: Communication stacks where the individual bits in the header attached to the data signify important information.
The if/else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. The if/else statement is a part of Kotlin's "Conditional" Statements, which are used to perform different actions based on different conditions.
The continue statement is used inside loops. When a continue statement is encountered inside a loop, control jumps to the beginning of the loop for next iteration, skipping the execution of statements inside the body of loop for the current iteration.
In programming, a named section of a program that performs a specific task. In this sense, a function is a type of procedure or routine.
The term parameter (sometimes called formal parameter) is often used to refer to the variable as found in the function definition, while argument (sometimes called actual parameter) refers to the actual input supplied at function call. ... Parameters appear in procedure definitions; arguments appear in procedure calls.
A recursive function is a function which either calls itself or is in a potential cycle of function calls. As the definition specifies, there are two types of recursive functions. Consider a function which calls itself: we call this type of recursion immediate recursion.
Kotlin Default Argument. In Kotlin, you can provide default values to parameters in function definition. If the function is called with arguments passed, those arguments are used as parameters. However, if the function is called without passing argument(s), default argument are used.
The try...catch statement marks a block of statements to try, and specifies a response, should an exception be thrown.
We can use try block as an expression which returns a value. The value returned by try expression is either the last expression of try block or the last expression of catch. Contents of the finally block do not affect the result of the expression.
If an exception occurs in try block then the control of execution is passed to the corresponding catch block. A single try block can have multiple catch blocks associated with it, you should place the catch blocks in such a way that the generic exception handler catch block is at the last(see in the example below).
When a try catch block is present in another try block, then it is called the nested try catch block. Each time a try block does not have a catch handler for a particular exception, then the catch blocks of parent try block are inspected for that exception, if match is found that that catch block executes.
The finally block always executes when the try block exits. This ensures that the finally block is executed even if an unexpected exception occurs. But finally is useful for more than just exception handling — it allows the programmer to avoid having cleanup code accidentally bypassed by a return, continue, or break. Putting cleanup code in a finally block is always a good practice, even when no exceptions are anticipated.
Sometime it is not possible to cast variable and it throws an exception, this is called as unsafe cast. The unsafe cast is performed by the infix operator as.
In certain computer programming languages, the Elvis operator, often written ?:, or or ||, is a binary operator that returns its first operand if that operand is considered true, and otherwise evaluates and returns its second operand. Note that the first operand does not need to have the literal boolean value true for the first operand to be returned; it just needs to be a value that is considered true by the specific language (such as 17 or "hello" being considered true in C). The Elvis operator is a variant of the ternary conditional operator, ? : in the sense that the expression with the Elvis operator A ?: B is approximately equivalent to the expression with the ternary operator A ? A : B.
HashMap is a Map based collection class that is used for storing Key & value pairs, it is denoted as HashMap<Key, Value> or HashMap<K, V>. This class makes no guarantees as to the order of the map. It is similar to the Hashtable class except that it is unsynchronised and permits nulls(null values and null key).
Kotlin MutableSet interface is a generic unordered collection of elements. MutableSet interface does not support duplicate elements. This interface is mutable so its methods support read-write functionality supports adding and removing elements.
Set interface uses mutableSetOf() function to create the list of object of set interface which contains list of elements.
HashSet is an unordered collection. It does not maintain the order in which the elements are inserted.HashSet internally uses a HashMap to store its elements. HashSet is not thread-safe. If multiple threads try to modify a HashSet at the same time, then the final outcome is not-deterministic.
Nested classes that are declared static are called static nested classes. Non-static nested classes are called inner classes. A nested class is a member of its enclosing class. Non-static nested classes (inner classes) have access to other members of the enclosing class, even if they are declared private.
In class-based object-oriented programming, a constructor is a special type of subroutine called to create an object. It prepares the new object for use, often accepting arguments that the constructor uses to set required member variables.
Visibility Modifiers. Classes, objects, interfaces, constructors, functions, properties and their setters can have visibility modifiers. (Getters always have the same visibility as the property.) There are four visibility modifiers in Kotlin: private , protected , internal and public .
A property or method defined in a base class is accessible in the derived class. ... This is called property overriding and method overriding. You override a base class property by redefining a property in the derived class.
Multiple inheritance has been a sensitive issue for many years, with opponents pointing to its increased complexity and ambiguity in situations such as the "diamond problem", where it may be ambiguous as to which parent class a particular feature is inherited from if more than one parent class implements said feature.
Sealed classes are used for representing restricted class hierarchies, when a value can have one of the types from a limited set, but cannot have any other type. They are, in a sense, an extension of enum classes: the set of values for an enum type is also restricted, but each enum constant exists only as a single instance, whereas a subclass of a sealed class can have multiple instances which can contain state.
Kotlin, similar to C# and Gosu, provides the ability to extend a class with new functionality without having to inherit from the class or use any type of design pattern such as Decorator. This is done via special declarations called extensions. Kotlin supports extension functions and extension properties.
- Passion for learning Kotlin
- Basic computer knowledge and skills
- Passion for programming
- Basic knowledge of computer science is optional
- Passion for mobile development
Learn about everything there is to know about Kotlin Applications and How To Program Them. A step by step process is used to show explain every facet of these topics.
NOTE: This course includes information on Java and Android!
Gain a good understanding of the following concepts with this course:
What Kotlin is?
How to program in the Kotlin language
Features of the Kotlin programming language
Design practises of applications
Kotlin is one of the most popular programming languages for Android in the world that is requested by all companies such as Google, Facebook and Microsoft for mobile development. This course will ensure you are not left out as more and more companies request this awesome language. This course will teach you everything about programming Kotin applications.
You will receive all the knowledge to use and leverage the powerful technology behind these amazing and wonderful platforms.
Over 250,000 students have enrolled on my courses and all of them are extremely satisfied. You will also be satisfied with this course. If you do not like the course, remember that within 30 days you can request a full refund. I guarantee you satisfaction.
If you have any questions regarding the topics covered in this course, please feel free to ask. I'm always happy to help those who want to learn.
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• Downloadable starter code and final code for each section.
• Free helpful support in the course Q&A when you have questions or get stuck.
• Multiple coding challenges to practice your new skills (solutions included).
Sounds great? Then start this adventure today by clicking the “Take this course" button, and join me in the only Kotlin course that you will need!
- Anyone looking to learn about Kotlin
- Developers looking to learn the skills needed to utilise Kotlin features
- Mobile developers
- People looking to learn about programming
- Those seeking to understand how Kotlin works
- People seeking guidance on how to create Kotlin based programs
- Beginners and experts in this field
- People seeking more knowledge on the various features of the Kotlin programming language
- Web developers
- People with a desire to improve their programming knowledge