Скачать или смотреть Vector. 🦀Rust Smart Contracts

🚀 Welcome back to the NEAR Protocol smart contract series!
In this episode, we explore Vectors in Rust — dynamic arrays that give your smart contracts the flexibility to grow and shrink at runtime.

Unlike fixed-size arrays, Vectors adapt to user input and external data. Whether you’re building transaction histories, user whitelists, or token holder lists, Vec is the perfect data structure.

🔹 What You’ll Learn
Vector Basics
Creating and growing vectors with Vec::new() and push()
Accessing elements by index and checking length with .len()
Using vec![] macro for quick initialization
Advanced Vector Operations
pop() to remove the last element
remove(index) to delete at any position
insert(index, value) to add anywhere in the list
position() and sum() for searching and aggregating data
retain() for efficient in-place filtering
When to Use Vec vs Arrays or HashMap
Use Vec when you need ordered, dynamic collections
Use Arrays when the size is fixed at compile time
Use HashMap when you need key-value lookups

🔹 Why It Matters
Top dApps and protocols rely on dynamic collections for:
Tracking transaction histories 📊
Managing user lists & whitelists 👥
Storing event logs 🔔
Keeping token holder records 💰

By mastering Vectors, you’ll write smart contracts that scale with your users while staying efficient.


⏱️ Timestamps

0:00 – Intro
0:35 – Vector Basics Operations
3:44 – Advanced Vector Operations
7:55 – When to use Vec vs Arrays or HashMap
8:45 – Interaction with the Smart Contract
11:00 – Outro

💡 Github Code https://github.com/alexursol2/NEAR_Le...

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#RustLang #NEARProtocol #SmartContracts #BlockchainDevelopment #Web3