Book Image

Julia Programming Projects

By : Adrian Salceanu
Book Image

Julia Programming Projects

By: Adrian Salceanu

Overview of this book

Julia is a new programming language that offers a unique combination of performance and productivity. Its powerful features, friendly syntax, and speed are attracting a growing number of adopters from Python, R, and Matlab, effectively raising the bar for modern general and scientific computing. After six years in the making, Julia has reached version 1.0. Now is the perfect time to learn it, due to its large-scale adoption across a wide range of domains, including fintech, biotech, education, and AI. Beginning with an introduction to the language, Julia Programming Projects goes on to illustrate how to analyze the Iris dataset using DataFrames. You will explore functions and the type system, methods, and multiple dispatch while building a web scraper and a web app. Next, you'll delve into machine learning, where you'll build a books recommender system. You will also see how to apply unsupervised machine learning to perform clustering on the San Francisco business database. After metaprogramming, the final chapters will discuss dates and time, time series analysis, visualization, and forecasting. We'll close with package development, documenting, testing and benchmarking. By the end of the book, you will have gained the practical knowledge to build real-world applications in Julia.
Table of Contents (19 chapters)
Title Page
Copyright and Credits
About Packt

Handling HTTP responses

After receiving and processing a request, the server sends back a HTTP response message. These messages have a standardized structure. They contain a wealth of information, with the most important pieces being the status code, the headers, and the body.

HTTP status codes

The status code is a three-digit integer where the first digit represents the category, while the next two digits are used to define the subcategory. They are as follows:

  • 1XX - Informational: Request was received. This indicates a provisional response.
  • 2XX - Success: This is the most important response status, acknowledging that the request was successfully received, understood, and accepted. It's what we're looking for in our web-mining scripts.
  • 3XX - Redirection: This class of status codes indicates that the client must take additional action. It usually means that additional requests must be made in order to get to the resource, so our scripts will have to handle this scenario. We also need to actively...