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


A string represents a sequence of characters. We can create a string by enclosing the corresponding sequence of characters between double quotes, as shown in the following:

julia> "Measuring programming progress by lines of code is like measuring aircraft building progress by weight." 

If the string also includes quotes, we can escape these by prefixing them with a backslash \:

julia> "Beta is Latin for \"still doesn't work\"."

Triple-quoted strings

However, escaping can get messy, so there's a much better way of dealing with this—by using triple quotes """...""".

julia> """Beta is Latin for "still doesn't work"."""







Within triple quotes, it is no longer necessary to escape the single quotes. However, make sure that the single quotes and the triple quotes are separated—or else the compiler will get confused:

julia> """Beta is Latin for "still doesn't work"""" 
syntax: cannot juxtapose string literal

The triple quotes come with some extra special powers when used with multiline...