The nullish coalescing operator (??) is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand.
const username = null ?? 'suprabha'; console.log(username); // suprabha
1. Nullish coalescing operator (??)
2. “&&” or “||”
3. Falsy Value
4. No chaining with “&&” or “||” operators
5. Browser Support
As you know “&&” or “||” operators are used to handle ‘truthy’ and ‘falsy’ values.
“&&” or “||” operators work well with null or undefined values, but many false values can produce unexpected results.
Let’s take an example, here we want to process the response where value is 0(zero). So when you get the response which is falsy, so it will return the right-hand side value.
What is a ternary operator: The ternary operator is a conditional expression that means this is a comparison operator and results come on a true or false condition and it is the shortest way to writing an if-else statement. It is a condition in a single line replacing the multiline if-else code.
syntax : condition ? value_if_true : value_if_false
condition: A boolean expression evaluates true or false
value_if_true: a value to be assigned if the expression is evaluated to true.
value_if_false: A value to be assigned if the expression is evaluated to false.
How to use ternary operator in python here are some examples of Python ternary operator if-else.
Brief description of examples we have to take two variables a and b. The value of a is 10 and b is 20. find the minimum number using a ternary operator with one line of code. ( **min = a if a < b else b ) **. if a less than b then print a otherwise print b and second examples are the same as first and the third example is check number is even or odd.
#python #python ternary operator #ternary operator #ternary operator in if-else #ternary operator in python #ternary operator with dict #ternary operator with lambda
In this article, we will discuss the unformatted Input/Output operations In C++. Using objects cin and cout for the input and the output of data of various types is possible because of overloading of operator >> and << to recognize all the basic C++ types. The operator >> is overloaded in the istream class and operator << is overloaded in the ostream class.
The general format for reading data from the keyboard:
cin >> var1 >> var2 >> …. >> var_n;
#c++ #c++ programs #c++-operator overloading #cpp-input-output #cpp-operator #cpp-operator-overloading #operators
A Practical Example of Nullish Coalescing
Optional Chaining and Nullish Coalescing
When we write applications, calling properties or methods on a non-existing object can have fatal consequences for your program. This usually results in a reference error causing our code to crash. You may not always expect this to happen, because you are not always in control of the data you are working with.
As you know Laravel 8 already officially released and today I will show you how to create CRUD operation in laravel 8, I have already perform many CRUD operations in my previous post like CRUD operation in ajax, CRUD operation in laravel 6 etc. So, today I will give you laravel 8 CRUD application example.
#laravel #php #laravel 8 crud operation example #crud operation #laravel 8 crud tutorial #crud operation in laravel 8