The Complete Solidity Course - Zero to Advanced for Blockchain and Smart Contracts - Only After Modifier in Solidity I

The video tutorial explores access patterns in coding, focusing on the 'only after' pattern. It guides viewers through creating a function to disown the current owner of a contract, ensuring only the owner can execute it. The tutorial introduces time-based execution, allowing function use only after a specified period. A reusable 'only after' modifier is developed to enforce this time restriction, enhancing function security and reusability.

What is the primary focus of the 'only after' pattern discussed in the video?

• Allowing any user to execute a function

• Restricting function execution to a specific time period

• Enabling multiple owners for a contract

• Disabling a function permanently

What is the main purpose of the 'disown' function?

• To transfer ownership to another user

• To delete the current owner of the contract

• To add a new owner to the contract

• To modify the contract's terms

Who is allowed to execute the 'disown' function?

• Any user

• The contract creator

• A designated administrator

• The current owner

What additional restriction is discussed for the 'disown' function?

• It can only be executed after a certain time period

• It can only be executed during business hours

• It requires a password to execute

• It can only be executed by multiple users

What variable is introduced to help implement the time-based restriction?

• Creation time

• Owner address

• Execution count

• Contract ID

What is the purpose of the 'only after' modifier?

• To enforce a time-based restriction on function execution

• To restrict function execution to a specific user

• To permanently disable a function

• To allow immediate execution of functions

How long must one wait before executing the 'disown' function after contract creation?

• Three weeks

• Two weeks

• One week

• Four weeks