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Learning Cairo - Common Collections (5)

Learning Cairo - Common Collections (5)

Prerequisites Install cairo-run. Arrays Arrays can store a series of data of the same type. When using arrays, you need to first import the array::ArrayTrait trait. The concept of arrays also exists in Solidity. We can define an array with a length of 2 and type uint256 in Solidity

Learning Cairo - Control Flows (4)

Learning Cairo - Control Flows (4)

Prerequisite Install cairo-run. Control Flow Today, we will learn about control flow in Cairo. The most common control flow expressions are if and loop. if Expression The if statement in Cairo is similar to Solidity, with the difference that Cairo’s if condition does not require parentheses. For example: use

Learning Cairo - Functions (3)

Learning Cairo - Functions (3)

Prerequisite Install cairo-run. Function Definitions Functions are a fundamental feature in Cairo, and we are already familiar with the main function, which is the most important function in Cairo and serves as the entry point for running Cairo code. As we have seen before, functions are defined using the fn

Learning Cairo - Variables and Mutability (2)

Learning Cairo - Variables and Mutability (2)

Prerequisite Install cairo-run. Variables Today we are going to learn about variables in Cairo. Let’s start with a simple example: // filename: print.cairo use debug::PrintTrait; fn main() { let x = 12; x.print(); x = 20; x.print(); } The code above is straightforward. First, we define a variable x and

Learning Cairo - Data Types (1)

Learning Cairo - Data Types (1)

Prerequisite Install cairo-run. Data Type Cairo and Solidity are both statically-typed languages, which means that Cairo’s data types need to be explicitly defined at compile-time and cannot be changed later. For example, if we define a variable a of type u128, then any subsequent assignment to a must be

Beyond Starbucks Odyssey-A More Inclusive, Efficient, and Secure Technical Solution for Web3 Commerce

Beyond Starbucks Odyssey-A More Inclusive, Efficient, and Secure Technical Solution for Web3 Commerce

Since the initial announcement in September 2022, Starbucks introduced its first-ever purchasable NFT ‘The Siren Collection Stamp’ in March 2023, establishing itself as a pioneer among Web 2 brands transitioning into the Web 3 space. This is another brave step for Starbucks, a true pioneer in the brand loyalty space.

How to write ERC20 contracts with Cairo 1.0

How to write ERC20 contracts with Cairo 1.0

StarkWare’s official repo provides a demo for ERC20 code, which we will use to learn how to write Cairo 1.0 contracts in this article. Contract Definition First, at the beginning of the contract, #[contract] is used to indicate that the following content is a smart contract, followed by

How Adidas Empowers Its Fashion Business with NFTs and Web3

How Adidas Empowers Its Fashion Business with NFTs and Web3

Adidas x TokenProof conducted a Web3 Mass Education event this week to educate their 10 million members about NFTs and provide 17K holders with token-gated benefits. This article explores how Adidas achieved this feat. In early April, Adidas launched a new dynamic NFT series called ALTS by Adidas, which marks

How to write ERC721 contracts with Cairo 1.0

How to write ERC721 contracts with Cairo 1.0

Introduction In this guide, we will walk through how to write an ERC721 contract using Cairo 1.0. ERC721 is a standard interface for non-fungible tokens (NFTs) on the Ethereum blockchain. The Cairo programming language is a low-level language designed for use on the StarkNet platform, which is a Layer

Reddio Upgrades Dashboard with New Layer 2 Functionalities

Reddio Upgrades Dashboard with New Layer 2 Functionalities

Reddio has just launched its updated dashboard, a cutting-edge platform for developers looking to build and deploy blockchain applications on layer 2. This new dashboard offers a wealth of features and tools to help developers quickly mint NFTs, deposit ERC20s, create in-app marketplace and more on layer 2. With its

ScalingX Partners with Reddio to Incubate Web3 Startups

ScalingX Partners with Reddio to Incubate Web3 Startups

SAN FRANCISCO, Dec. 20, 2022 (GLOBE NEWSWIRE) — ScalingX, a Web3 developer community and accelerator, and Reddio, a blockchain infrastructure company, today announced a strategic partnership to jointly promote the adoption of zero-knowledge rollup (zkRollup) technologies among startups. The alliance represents an important joint force between accelerators and technology providers. With

Deesse Launches its NFT on Reddio Powered by StarkWare

Deesse Launches its NFT on Reddio Powered by StarkWare

Deesse, a blockchain-based enjoy-to-earn placement game, has launched its NFTs on Reddio’s Layer 2, which provides players with 0 gas fee and instant confirmation. Today, there are high barriers to bringing gaming assets onto decentralized platforms that use Layer 2 technology. Most of the gaming companies have to sacrifice

Scaling blockchains with STARKs

Scaling blockchains with STARKs

Deep Dive Into StarkWare On September 30th, 2022. Eli Ben-Sasson, the president and co-founder of StarkWare, gave a TechTalk in Singapore hosted by StarkWare and Reddio, about the history of STARK (short for Scalable Transparent ARgument of Knowledge), how STARK works, and a brief explanation of how StarkEx/StarkNet works.

Reddio Announces Layer 2 zkRollup Mainnet Launch

Reddio Announces Layer 2 zkRollup Mainnet Launch

Providing Web3 App, Metaverse and Gaming developers an easy way to scale NFT minting and trading on Ethereum with low gas fee and instant confirmation Reddio, a blockchain infrastructure company, today unveils the mainnet of their zkRollup APIs powered by StarkEx from StarkWare. It is a challenge for developers to