Ethereum: Why use circom circuits to generate solidity contracts, instead of directly writing the contract?

Understanding the Circircuit: Why write a circuit before writing a solidity contract

As a developer, you have probably found scenarios where writing a smart contract from scratch may be overwhelming due to the large amount of complexity involved. In this article, we will explore why the use of the circular circuit is often preferred to directly write a solidity contract.

What are circus and solidity?

The circular circuit refers to a tool that allows you to design and generate intelligent contracts without writing code in solidity, the programming language used for intelligent Ethereum contracts. It uses a visual interface to create contracts by defining circuit functions, which are essentially logical expressions that perform calculations.

Why write a circuit before writing a solidity contract?

Writing a circular circuit offers several advantages about writing directly a solidity contract:

  • Reduced complexity : By dividing the process into smaller and more manageable components (circuits), you can avoid unnecessary complexity and focus on understanding each aspect of the intelligent contract.

  • Enhanced Legability : The visual interface of the circuit facilitates the understanding of its code, presenting logic in a more readable format by man.

  • Flexibility : You can reuse circuits in various contracts, reducing effort duplication and making your development process more efficient.

  • No code overload : Since you are not writing a solidity code directly, there is less overload associated with analysis, compilation and code optimization.

What is a circuit?

A circular circuit consists of a set of circuit functions, each representing a specific logical operation (eg arithmetic, comparison, conditional). These functions are combined using logical operators to create complex operations that can be performed in various scenarios.

Here is an example of how a circular circuit can be:

`Ciro

// defines two variables: x and y

var x = 5;

var y = 10;

// Conditional Declaration (E)

conditional function (x, y) {

if (x> 0 && y> 0) Returns True; // returns true only when both conditions are met

}

// Arithmetic operation (addition)

Arithmetic function (x, y) {

Return x + y;

}

// Comparison Operator (greater than)

Comparison of functions (x, y) {

Return X> Y;

}

`

Writing a circuit

To create a circular circuit, you will need to define the following:

  • Variables : They represent the input parameters for the functions of your circuit.

  • Circuit Functions : These are the logical operations that perform calculations.

  • Logic operators : They connect the circuits using logical operators (and or not).

  • Conditional

    : Specify scenarios in which the circuit must be performed.

You can define a circular circuit in solidity using the circus' library. Here is an example of how you can write a simple circular circuit:

Solidity

Pragma solidity ^0.8,0;

Simplecirco contract {

UINT256 PUBLIC X;

UINT256 PUBLIC Y;

Setx Function (Uint256 _x) PUBLIC {

x = _x;

}

Setio Function (Uint256 _Y) PUBLIC {

Y = _Y;

}

Conditional Function (Unt256 Condition, Result Uint256) PUBLIC PURE {

if (condition == 0) returns true; // returns true only when the condition is met

}

Arithmetic Function (Uint256 a, Unt256 b) Pure Public {{

Return to + B;

}

Comparison of Functions (Uint256 Cond, Unt256 Value) PUBLIC PURE {

return cond> value;

}

}

`

Conclusion

Writing a circular circuit before writing a solidity contract can significantly improve your understanding of the intelligent contract development process. By reducing complexity and improving readability, you will become more efficient in your development workflow.

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