Book Image

Julia 1.0 Programming Cookbook

By : Bogumił Kamiński, Przemysław Szufel
Book Image

Julia 1.0 Programming Cookbook

By: Bogumił Kamiński, Przemysław Szufel

Overview of this book

Julia, with its dynamic nature and high-performance, provides comparatively minimal time for the development of computational models with easy-to-maintain computational code. This book will be your solution-based guide as it will take you through different programming aspects with Julia. Starting with the new features of Julia 1.0, each recipe addresses a specific problem, providing a solution and explaining how it works. You will work with the powerful Julia tools and data structures along with the most popular Julia packages. You will learn to create vectors, handle variables, and work with functions. You will be introduced to various recipes for numerical computing, distributed computing, and achieving high performance. You will see how to optimize data science programs with parallel computing and memory allocation. We will look into more advanced concepts such as metaprogramming and functional programming. Finally, you will learn how to tackle issues while working with databases and data processing, and will learn about on data science problems, data modeling, data analysis, data manipulation, parallel processing, and cloud computing with Julia. By the end of the book, you will have acquired the skills to work more effectively with your data
Table of Contents (18 chapters)
Title Page
Copyright and Credits
About Packt

Using IOBuffer to efficiently work with in-memory streams

In the recipe on Managing streams, and reading and writing files, we discussed how you can read and write streams. In this recipe, we will explain how you can create an in-memory stream that allows you to perform fast read and write operations on data using functions operating on streams.

We will show how you can create a simple string builder using an IOBuffer object.


Getting ready

In this recipe, we are going to create a function that takes a string and splits it into two substrings, one consisting of even characters in a string, and the other consisting of odd characters.


In the GitHub repository for this recipe, you will find thecommands.txtfile, which contains the presented sequence of shell and Julia commands.

Now, open your favorite terminal to execute the commands.

How to do it...

You will first define a function that splits the string and then test it on a sample input:

  1. Define the following function in the Julia command line...