What is a delegate call in Solidity?

How to make delegate calls in Solidity?

As a Smart Contract developer, you might come across several use cases where a Smart Contract should be able to call the functions of another Smart Contract. This is called Cross-Contract Calls. One such way to make a Cross-Contract call is by using the delegatecall function.

For understanding, let’s consider two Smart Contracts: one Caller Contract and one Target Contract. We will make Cross-Contract calls from the Caller Contract to the Target Contract.

In Ethereum, a deployed Smart Contract always has an address. To call the Target Contract knowing its address is a must. This address object has a method called delegatecall. This method is used to make delegate calls in Solidity.

Now, let's see how delegate calls are implemented.

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