Q571. How to do logging in React Native?
You can use `console.log`, `console.warn`, etc. As of React Native v0.29 you can simply run the following to see logs in the console: ``` $ react-native log-ios $ react-n...
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Q572. What is Tailwind CSS?
TailwindCSS is a utility-first CSS framework that provides pre-defined CSS classes that can be used to rapidly build custom user interfaces.
Q573. How do you add a key value pair in javascript?
There are two possible solutions to add new properties to an object. Let's take a simple object to explain these solutions. ```javascript var object = { key1: value1, key...
Q574. How to debug your React Native?
Follow the below steps to debug React Native app: 1. Run your application in the iOS simulator. 2. Press `Command + D` and a webpage should open up at `http://localhost:8...
Q575. How will you convert a string to all lowercase?
In Python, convert a string to lowercase using the **`str.lower()`** method: ```python text = "HireXTech INTERVIEW Guide" print(text.lower()) # Output: "hirextech intervi...
Q576. Is the !-- notation represents a special operator?
No,that's not a special operator. But it is a combination of 2 standard operators one after the other, 1. A logical not (!) 2. A prefix decrement (--) At first, the value...
Q577. What is reselect and how it works?
_Reselect_ is a **selector library** (for Redux) which uses _memoization_ concept. It was originally written to compute derived data from Redux-like applications state, b...
Q578. How do you assign default values to variables?
You can use the logical or operator `||` in an assignment expression to provide a default value. The syntax looks like as below, ```javascript var a = b || c; ``` As per ...
Q579. What is Flow?
_Flow_ is a _static type checker_ designed to find type errors in JavaScript. Flow types can express much more fine-grained distinctions than traditional type systems. Fo...
Q580. How do you define multiline strings?
You can define multiline string literals using the '\n' character followed by line terminator('\'). ```javascript var str = "This is a \n very lengthy \n sentence!"; cons...