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Salesforce introduced LWCs for better performance, reusability, and modern web standards.
LWCs offer better performance due to their lightweight nature and optimized rendering.
LWCs promote reusability through modular design and encapsulation of functionality.
LWCs align with modern web standards like ES6, Shadow DOM, and Web Components, making them more future-proof.
Aura components are based on Aura framework, which has ...
Events in LWCs differ from Aura components in terms of syntax, propagation, and handling.
In LWCs, events are dispatched using the standard DOM event model, while in Aura components, events are handled using the Aura event system.
LWC events use standard JavaScript event handling methods like addEventListener and dispatchEvent, while Aura events use $A.get('e.namespace:eventName').fire().
LWC events do not bubble up the D...
Application events are avoided in Salesforce development due to their potential impact on performance and complexity.
Application events can lead to tight coupling between components, making the code harder to maintain and debug.
They can also result in excessive event firing, causing performance issues.
Using component events or other communication patterns like pub-sub can be more efficient and manageable.
Avoiding appli...
Find the count of contacts associated to an account which have unique email Ids
I have worked with integration frameworks such as MuleSoft, Apache Camel, and Dell Boomi.
MuleSoft
Apache Camel
Dell Boomi
External objects are virtual objects that allow you to access data stored outside Salesforce.
External objects represent data from an external system in Salesforce without copying the data into Salesforce.
They are defined using external data sources and external data objects.
You can use them to integrate data from external systems like databases, ERP systems, or web services.
External objects allow you to view and intera...
I applied via Campus Placement
ATM transaction involves multiple background processes including authentication, authorization, and communication with bank servers.
Customer inserts card and enters PIN
ATM authenticates the card and PIN
ATM requests authorization from bank server
Bank server verifies account balance and approves or denies transaction
ATM dispenses cash or completes other requested transaction
ATM updates account balance and sends transacti
Cut cake into 8 pieces using knife 3 times only.
First, cut the cake horizontally into two equal halves.
Then, cut the cake vertically into four equal pieces.
Finally, cut the cake horizontally again into eight equal pieces.
Make sure to use the knife efficiently to minimize the number of cuts.
Practice visualization before making the cuts to avoid mistakes.
The one bird was already dead.
The bird was already dead before the shot was fired.
The bird was injured and unable to fly away with the rest of the birds.
The bird was a decoy bird used for hunting purposes.
The bird was a trained bird used for falconry.
Developed a web-based attendance management system and a mobile app for event management.
Created a database schema and implemented CRUD operations using PHP and MySQL.
Designed the user interface using HTML, CSS, and JavaScript.
Integrated Google Maps API for location tracking in the mobile app.
Implemented push notifications using Firebase Cloud Messaging.
Collaborated with a team of four to complete the projects within t
I applied via Campus Placement
Finding smallest of 4 numbers without using >.< and min function in Java.
Initialize a variable with the first number
Compare it with the remaining numbers using if-else statements
If a smaller number is found, update the variable
Repeat until all numbers are compared
The final value of the variable will be the smallest number
Code for palindrome checking
Convert the input to lowercase to ignore case sensitivity
Use two pointers, one at the start and one at the end of the string
Compare the characters at both pointers and move them towards each other
If all characters match, it's a palindrome
Javascript code to display 'Hello World!' on the webpage
Create a new HTML file
Add a script tag with 'type' attribute set to 'text/javascript'
Inside the script tag, use document.write() to display 'Hello World!'
Swap two numbers without using a temporary variable.
Use addition and subtraction to swap the values
Use XOR operator to swap the values
Use multiplication and division to swap the values
To add 2 tables, we need to use a join operation on a common column.
Identify the common column between the tables
Choose the appropriate join type (inner, outer, left, right)
Write the SQL query to join the tables
Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
Union combines and removes duplicates, Union All combines all rows including duplicates.
Union is used to combine the result sets of two or more SELECT statements and remove duplicates.
Union All is used to combine the result sets of two or more SELECT statements and includes all rows, including duplicates.
Union is slower than Union All as it has to remove duplicates.
Union requires the same number of columns in all SELEC...
Being assigned a project with unrealistic deadlines and minimal guidance
Received a project with tight deadlines and unclear requirements
Struggled to meet the deadlines due to lack of guidance and support
Had to work long hours and weekends to try to complete the project
Learned the importance of clear communication and setting realistic expectations
Code for rand7 using rand5 function
Use rand5 twice to generate a number in [1,25] with equal probability
If the number is greater than 21, discard and try again
Otherwise, return (number mod 7) + 1
LRU cache is implemented using a doubly linked list and a hash map.
Create a doubly linked list to keep track of the order of elements in the cache.
Create a hash map to store the key-value pairs of the cache.
When a new element is added, check if the cache is full. If it is, remove the least recently used element from the linked list and the hash map.
When an element is accessed, move it to the front of the linked list to...
Function to randomly select pivot element in Quick Sort
Generate a random index within the range of the array
Return the element at the randomly generated index as the pivot
posted on 2 Dec 2015
posted on 13 Mar 2015
I was interviewed in Dec 2016.
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