Q961. What is route matching priority?
Sometimes the URL might be matched by multiple routes and the confusion of which route need to be mapped is resolved by route matching priority. The priority is based on ...
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Q962. Subqueries can be nested in...
Subqueries can be nested within virtually every major SQL clause and statement: 1. **`WHERE` Clause**: Filtering candidate rows (`WHERE id IN (SELECT ...)`) 2. **`FROM` C...
Q963. What are the rules for local and global variables in Python?
If a variable is def ined outside function then it is implicitly global​. If variable is assigned new value inside the function means it is local​. If we want to make it ...
Q964. What are HTML ARIA attributes and how are they used?
| Attribute | Description | Example | | ------------------ | -------------------------------------------------------------------------------------------------------------...
Q965. Why do we need callbacks?
The callbacks are needed because javascript is an event driven language. That means instead of waiting for a response, javascript will keep executing while listening for ...
Q966. How do you access props in attribute quotes?
React (or JSX) doesn't support variable interpolation inside an attribute value. The below representation won't work: ```jsx harmony ``` But you can put any JS expression...
Q967. How do you add polyfills in Next.js?
Next.js automatically provides polyfills for widely used modern ECMAScript features (such as `Promise`, `fetch`, `Object.assign`, `Symbol`, and `URL`) targeting browsers ...
Q968. What are nested routes?
Generally, the app is composed of nested components which are nested multiple levels deep. The segments of a URL corresponds to a certain structure of these nested compon...
Q969. Row comparison operators with subqueries?
`IN`, `ANY`, `ALL`, `EXISTS`, `NOT EXISTS`, and standard comparison operators (`=`, `>`, `=`, ` ALL (SELECT salary FROM employees WHERE dept = 'Sales') WHERE salary > ANY...
Q970. What is the output of the following Python program regarding local variable shadowing?
#!/usr/bin/python ```python def fun1(a): ``` print'a:',a a=33; print'locala:',a a=100 fun1(a) print'aoutsidefun1:',a Output: a:100 locala:33 aoutsidefun1:100