Cairo 1.0-Alpha.2 — New Release is Coming
Published on: January 26, 2023

Cairo 1.0-Alpha.2 — New Release is Coming


  • We are releasing Cairo 1.0-alpha.2, which brings a host of new features to the language
  • It is now possible to implement an ERC20 contract
  • Those new linguistic features will be applicable in the upcoming StarkNet-v0.11.0 version

Fresh New Features!

Cairo 1.0 is continuing its fast improvement pace. Today’s release introduces, among other things, all the necessary features to write an ERC-20 contract.

To mention some of the new features:

  • Dictionaries
  • Events in contracts
  • Mapping storage variables
  • Trait support
  • Type inference
  • Methods

See the complete list in the GitHub repository.

Let’s have a look at an example of an ERC20 contract (the full concrete example is, of course, on GitHub) to demonstrate a use case of an event and mappings in the storage:

ERC20 contract

Jump Into the Water

We continue to work on two parallel vectors:

  1. Evolve Cairo 1.0 at full speed towards full-feature compatibility with the old Cairo.
  2. Develop Starknet v0.11.0 that will support contracts written in Cairo 1.0

In the meanwhile, we encourage devs to start writing with Cairo 1.0 and getting familiar with it.

For any questions — you can use the Cairo 1.0 Discord channel.

For any suggestions or feedback — don’t hesitate to open an issue in the Cairo repo.


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