Compact Standard Library: A Practical Guide to Every Export

The provided content is a comprehensive guide to using the core libraries and constructs in Midnight (likely a blockchain or smart contract platform) for building secure, efficient, and feature-rich smart contracts. Below is an organized summary of the key components and their purposes:

1. Generic Types

• Maybe<T>: Represents optional values, similar to Option in Rust or Nullable in C#. It's used when a value might be absent.
• Either<L, R>: A type that can hold one of two types (Left or Right). Often used for error handling where the left side represents an error and the right side represents success.

2. Merkle Trees

• MerkleTree<N, T>: An on-chain data structure that allows you to store a fixed-size indexable collection of items (type T) with a Merkle root hash for integrity verification.
  • N is the number of bits used in the tree's indexing mechanism.
  • T represents the type of values stored in the leaves.

3. Commitment Functions

• persistentCommit: Creates a commitment that can be verified later using verifyCommitment.

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