Trying out Scilla

Scilla is under active development. You can try out Scilla in the online IDE.

Savant IDE

Neo Savant IDE is a web-based development environment that allows you to interact with the simulated testnet environment, the live developer testnet, and the live mainnet. It is optimized for use in Chrome Web Browser. Neo Savant IDE allows you to import accounts from external wallets like Ledger or keystore files.

The IDE automatically request the faucets to disburse testnet $ZIL to you when the wallet is successfully imported. On the simulated testnet environment, you will receive 10,000 $ZIL. While on the developer testnet, you will receive 300 $ZIL. There are no faucets for the live mainnet.

The Neo Savant IDE can act as a staging environment, before doing automated script testing with tools like Isolated Server and Zilliqa-JS. To try out the Neo Savant IDE, users need to visit Neo Savant IDE.

Example Contracts

Savant IDE comes with the following sample smart contracts written in Scilla:

  • HelloWorld : It is a simple contract that allows a specified account denoted owner to set a welcome message. Setting the welcome message is done via setHello (msg: String). The contract also provides an interface getHello() to allow any account to be returned with the welcome message when called.
  • BookStore : A demonstration of a CRUD app. Only owner of the contract can add members. All members will have read/write access capability to create OR update books in the inventory with book title, author, and bookID.
  • CrowdFunding : Crowdfunding implements a Kickstarter-style campaign where users can donate funds to the contract using Donate(). If the campaign is successful, i.e., enough money is raised within a given time period, the raised money can be sent to a predefined account owner via GetFunds(). Else, if the campaign fails, then contributors can take back their donations via the transition ClaimBack().
  • Auction : A simple open auction contract where bidders can make their bid using Bid(), and the highest and winning bid amount goes to a predefined account. Bidders who don’t win can take back their bid using the transition Withdraw(). The organizer of the auction can claim the highest bid by invoking the transition AuctionEnd().
  • FungibleToken : ZRC-2 Fungible token standard contract for creating fungible digital assets such as stablecoins, utility tokens, and loyalty points.
  • NonFungible Token : ZRC-1 Non-fungible token standard contract for creating unique digital assets such as digital collectibles, music records, arts, and domains.
  • ZilGame : A two-player game where the goal is to find the closest preimage of a given SHA256 digest (puzzle). More formally, given a digest d, and two values x and y, x is said to be a closer preimage than y of d if Distance(SHA-256(x), d) < Distance(SHA-256(y), d), for some Distance function. The game is played in two phases. In the first phase, players submit their hash, i.e., SHA-256(x) and SHA-256(y) using the transition Play(guess: ByStr32). Once the first player has submitted her hash, the second player has a bounded time to submit her hash. If the second player does not submit her hash within the stipulated time, then the first player may become the winner. In the second phase, players have to submit the corresponding values x or y using the transition ClaimReward(solution: Int128). The player submitting the closest preimage is declared the winner and wins a reward. The contract also provides a transition Withdraw () to recover funds and send to a specified owner in case no player plays the game.
  • SchnorrTest : A sample contract to test the generation of a Schnorr public/private key pairs, signing of a msg with the private keys, and verification of the signature.
  • ECDSATest : A sample contract to test the generation of a ECDSA public/private keypairs, signing of a message with the private keys, and verification of the signature.