Karadi Path Education Company Interview Questions and Answers

Python provides a built-in method to remove leading whitespaces from a string.

• Use the lstrip() method to remove leading whitespaces from a string.

• lstrip() method removes all whitespaces from the beginning of the string.

• Example: string = ' Hello World' string.lstrip() Output: 'Hello World'

Code to create a star pattern

• Use nested loops to print the pattern

• The outer loop controls the number of rows

• The inner loop controls the number of stars to print in each row

• Use a combination of spaces and stars to create the pattern

Overloading constructor in Python allows creating multiple constructors with different parameters.

• Define multiple constructors with different parameters

• Use default values for optional parameters

• Call the appropriate constructor based on the number and type of arguments passed

Code to reverse a string

• Use a loop to iterate through the string

• Create a new string and add each character from the original string in reverse order

• Return the new string

Apex is used for building custom business logic and integrations on the Salesforce platform.

• Apex is a strongly-typed, object-oriented programming language.

• It allows developers to create custom code to extend Salesforce functionality.

• Apex can be used to build triggers, controllers, and classes for custom business logic.

• It can also be used to integrate Salesforce with external systems.

• Apex code runs natively on the Salesforce platform, providing secure and scalable performance.

Salesforce developer is a professional who develops and customizes applications on the Salesforce platform.

• Salesforce developers use Apex and Visualforce to create custom applications and functionality

• They work closely with stakeholders to understand business requirements and design solutions

• They also integrate Salesforce with other systems and manage data within the platform

• Examples of Salesforce developer roles include Application Developer, Integration Developer, and Light...read more

Attempt to de-reference null object occurs when trying to access or manipulate a null object in Salesforce development.

• Always check if an object is null before trying to access its properties or methods

• Use safe navigation operator '?' to avoid null pointer exceptions

• Example: Account acc = null; System.debug(acc.Name); // This will throw Attempt to de-reference null object error

• Example: Account acc = null; System.debug(acc?.Name); // This will not throw an error

Code to reverse a string of your name

• Create a function that takes a string as input

• Use built-in functions like reverse() or loop through the string to reverse it

• Return the reversed string