Book Image

Julia Cookbook

By : Raj R Jalem, Jalem Raj Rohit
Book Image

Julia Cookbook

By: Raj R Jalem, Jalem Raj Rohit

Overview of this book

Want to handle everything that Julia can throw at you and get the most of it every day? This practical guide to programming with Julia for performing numerical computation will make you more productive and able work with data more efficiently. The book starts with the main features of Julia to help you quickly refresh your knowledge of functions, modules, and arrays. We’ll also show you how to utilize the Julia language to identify, retrieve, and transform data sets so you can perform data analysis and data manipulation. Later on, you’ll see how to optimize data science programs with parallel computing and memory allocation. You’ll get familiar with the concepts of package development and networking to solve numerical problems using the Julia platform. This book includes recipes on identifying and classifying data science problems, data modelling, data analysis, data manipulation, meta-programming, multidimensional arrays, and parallel computing. By the end of the book, you will acquire the skills to work more effectively with your data.
Table of Contents (12 chapters)


The usage of a semicolon to represent expressions is known as quoting. The characters inside the parentheses after the semicolon constitute an Expression object.

How to do it...

To check this behavior, let's check for the type of a similar statement that has an object inside the parentheses after a semicolon. This can be done in the REPL as follows:

typeof(:((a + b) * c) / 6))

The preceding command gives the following output:

Multiple expressions can be represented as a block by quoting them. The syntax would be as follows:

exp = quote
              some code
              some more code
              more code
              a little more

An example with some code inside the code block would look like this:

Now, let's verify the type of the exp variable with the typeof() function.

So, the the code block enclosed inside quote and end is indeed an expression.

How it works...

Quoting is the concept of creating expression objects using the : character...