Rust Word Frequency Counter with HashMap 📊 | Rust by Examples #10
Автор: Celeste AI - Your AI Coding Coach
Загружено: 2026-01-16
Просмотров: 6
📊 Build a Word Frequency Counter in Rust using HashMap!
In this hands-on tutorial, you'll learn to count word occurrences in text files using Rust's powerful HashMap and Entry API.
🎯 What You'll Build:
A complete word frequency counter that reads text files, counts every word, and displays the top N most common words - sorted by frequency!
✅ What You'll Learn:
• HashMap for key-value counting (String keys, usize values)
• The Entry API with entry().or_insert() for efficient updates
• Text processing with split_whitespace() and iterators
• Sorting vectors with sort_by() in descending order
• Rust module organization (mod, pub, use)
⏱️ Chapters:
0:00 - Introduction
0:15 - HashMap Explained
0:33 - Create Rust Project
1:00 - Create Sample Text File
1:45 - Build the Counter Module
2:29 - Sorting by Frequency
2:47 - Add Top Words Function
3:25 - Update Main Function
4:13 - Run the Demo
4:41 - Recap: What We Learned
5:01 - Next: CSV Data Processor
💻 Source Code: https://github.com/GoCelesteAI/word_c...
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🌟 Taught by CelesteAI
Making Rust Accessible for Everyone
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#Rust #RustLang #Programming #HashMap #Tutorial #LearnRust #CelesteAI #RustByExamples
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