ZhangZhihuiAAA - 博客园

Database Naming Convention Guide

摘要： 📁 1. General Principles RuleExample Use lowercase with underscores user_profile, not UserProfile or UserProfile Use singular table names user, order, 阅读全文

posted @ 2025-04-20 16:03 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0)

VSCode - Shift + Enter

摘要： pip install jupyter Python Interactive window Jupyter (formerly IPython Notebook) is an open-source project that lets you easily combine Markdown text 阅读全文

posted @ 2025-04-20 10:38 ZhangZhihuiAAA 阅读(34) 评论(0) 推荐(0)

Jupyter Notebook - Add a ';' to not display the returned value of the methods

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posted @ 2025-04-18 17:23 ZhangZhihuiAAA 阅读(9) 评论(0) 推荐(0)

ElasticSearch - Installation

摘要： Elasticsearch is a distributed search and analytics engine, scalable data store, and vector database built on Apache Lucene. It’s optimized for speed 阅读全文

posted @ 2025-04-17 14:47 ZhangZhihuiAAA 阅读(20) 评论(0) 推荐(0)

Python - Regular Expression

摘要： Why does string '10/12/2007' match Python regular expression '\d{2}/\d{2}/\d{4}' but not match '\d{1, 2}/\d{1, 2}/\d{4}'? You might expect it to match 阅读全文

posted @ 2025-04-15 21:31 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Pandas - Customize display options

摘要： You can customize it: import pandas as pd pd.options.display.float_format = '{:.2f}'.format ✅ To increase the string display length in Pandas, set the 阅读全文

posted @ 2025-04-11 17:16 ZhangZhihuiAAA 阅读(9) 评论(0) 推荐(0)

Colab - Mount Google Drive in Colab Notebook

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posted @ 2025-04-10 11:09 ZhangZhihuiAAA 阅读(5) 评论(0) 推荐(0)

LeetCode - Unique Paths II

摘要： You are given an m x n integer array grid. There is a robot initially located at the top-left corner (i.e., grid[0][0]). The robot tries to move to th 阅读全文

posted @ 2025-04-09 19:28 ZhangZhihuiAAA 阅读(12) 评论(0) 推荐(0)

LeetCode - Minimum Path Sum

摘要： Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right, which minimizes the sum of all numbers along its path. 阅读全文

posted @ 2025-04-08 21:15 ZhangZhihuiAAA 阅读(16) 评论(0) 推荐(0)

Python - list[list] * int operation

摘要： >>> m, n = 3, 4 >>> grid = [[float('inf')] * n] * m >>> grid [[inf, inf, inf, inf], [inf, inf, inf, inf], [inf, inf, inf, inf]] >>> for j in range(n): 阅读全文

posted @ 2025-04-08 21:09 ZhangZhihuiAAA 阅读(8) 评论(0) 推荐(0)

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