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


Common programming wisdom says the following:

"Code is read much more often than it is written, so plan accordingly."

Code comments are a powerful tool that make the programs easier to understand later on. In Julia, comments are marked with the # sign. Single-line comments are denoted by a # and everything that follows this, until the end of the line, is ignored by the compiler. Multiline comments are enclosed between #= ... =#. Everything within the opening and the closing comment tags is also ignored by the compiler. Here is an example:

julia> #= 
           Our company charges a fixed  
           $10 fee per transaction. 
const flatfee = 10 # flat fee, per transaction 

In the previous snippet, we can see both multiline and single-line comments in action. A single-line comment can also be placed at the beginning of the line.