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.
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Explain: Three dots or spread operator
Unbelievable Feature release by ES6. it’s called spread operator or rest operator
Let’s deep dive into all features. ES6 provides many operators and feature but some beginners are failed to remember this feature. From many experience developer also not using this feature during development
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;
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If you have been using TypeScript, chances are you have come across the weird “?.” & “!” operators while writing code. And if you are like me, then you might have pulled your hair out trying to figure out the difference between them. Well, rest assured because after reading this article, you will have a clear picture of the two operators and the difference between them.
Before we jump to the difference between these two, let us first understand the behavior of these operators.
In the above code, let’s say we have a data variable but we are not aware of its contents. It may be a null value, undefined, or it may have some properties. To return “data.getName()”, we first have to check whether data is not null and not undefined . Not performing this check may result in an error if the data variable is undefined or null.
Typescript makes writing code like this easy and much simpler to read. With optional chaining, the above code can be re-written in TypeScript as:
Wasn’t that concise and clean? The star of the show in optional chaining is the "?.” operator that checks if the variable is either null or undefined.
If the "?.” operator finds that the variable is either null or undefined, TypeScript will immediately stop running the expression.