Read 10 new books from O'Reilly for free | PixelsTech
Recently O'Reilly provided free access to some books. Some of them are even in early release status. Here we recommend 10 of them. 1�Mastering Perl 2�Git Pocket Guide 3�Vagrant: Up and Running 4�High Performance Browser Networking 5�802.11ac: A Survival Guide 6�Test-Driven Development with Python 7�Interactive Data Visualization for the Web 8�HTML5 Canvas 9�Programming JavaScript
Three Reasons Why You Shouldn't Use Single Table Inheritance –
It creates a cluttered data model. Why don’t we just have one table called objects and store everything as STI? STI tables have a tendency to grow and expand as an application develops, and become intimidating and unweildy as it isn’t clear which columns belong to which models. It forces you to use nullable columns. A comic book must have an illustrator, but regular books don’t have an illustrator
Beautiful Soup: We called him Tortoise because he taught us.
You didn't write that awful page. You're just trying to get some data out of it. Beautiful Soup is here to help. Since 2004, it's been saving programmers hours or days of work on quick-turnaround screen scraping projects. Beautiful Soup is a Python library designed for quick turnaround projects like screen-scraping. Three features make it powerful: Beautiful Soup provides a few simple methods and
Masaya Sakuragawa æ«»å·æ˜Œå“‰ç ”究室
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Kaggle: Your Machine Learning and Data Science Community
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