# EXPRESSIONS

A regular expression (regex or regexp) is a sequence of characters that define a search pattern. It is an unofficial and free Regular Expressions book created for educational purposes. All the content is extracted from Stack Overflow Documentation, which is written by many hardworking individuals at Stack Overflow....

This book is a step-by-step introduction on how shell scripting can help solve many of the data processing tasks that Health and Life specialists face everyday with minimal software dependencies. The examples presented in the book show how simple command line tools can be used and combined to retrieve data and text from web resources, to filter and...

The Linux Command Line takes you from your very first terminal keystrokes to writing full programs in Bash, the most popular Linux shell (or command line). Along the way you'll learn the timeless skills handed down by generations of experienced, mouse-shunning gurus: file navigation, environment configuration, command chaining, pattern matchin...

When processing text files, the awk language is ideal for handling data extraction, reporting, and data-reformatting jobs. This practical guide serves as both a reference and tutorial for POSIX-standard awk and for the GNU implementation, called gawk. This book is useful for novices and awk experts alike. In this thoroughly revised 5th edition, ...

The book heavily leans on examples to present features of regular expressions one by one. It is recommended that you manually type each example and experiment with them. You should have a good understanding of basic-level programming concepts and prior experience working with JavaScript. Should also know functional programming concepts like map ...

The book heavily leans on examples to present features of sed as well as regular expressions one by one. It is recommended that you manually type each example and experiment with them. Understanding both the nature of sample input string and the output produced is essential. You should have prior experience working with command line and bash she...

The book heavily leans on examples to present features of grep as well as regular expressions one by one. It is recommended that you manually type each example and experiment with them. Understanding both the nature of sample input string and the output produced is essential. You should have prior experience working with command line and bash sh...

The title of this book was originally Think Perl 6, but since Perl 6 has been renamed Raku, we have also changed the title of the book. Want to learn how to program and think like a computer scientist? This practical guide gets you started on your programming journey with the help of Raku (Perl 6), the younger sister of the popular Perl programm...

By highlighting relations between experimental and theoretical work, this volume explores new ways of addressing one of the central challenges in the study of language and cognition. The articles bring together work by leading scholars and younger researchers in psychology, linguistics and philosophy. An introductory chapter lays out the background...

Guido van Rossum created the Python programming language in the late 1980s. In contrast to other popular languages such as C, C++ , Java, and C#, Python strives to provide a simple but powerful syntax. Python is used for software development at companies and organizations such as Google, Yahoo, Facebook, CERN, Industrial Light and Magic, and NAS...

To tap into the power of Python's open data science stack - including NumPy, Pandas, Matplotlib, Scikit-Learn, and other tools - you first need to understand the syntax, semantics, and patterns of the Python language. This report provides a brief yet comprehensive introduction to Python for engineers, researchers, and data scientists who are a...

Scripting and automation tasks often need to extract particular portions of text from input data or modify them from one format to another. This book will help you learn Python Regular Expressions, a mini-programming language for all sorts of text processing needs. The book heavily leans on examples to present features of regular expressions ...

Scripting and automation tasks often need to extract particular portions of text from input data or modify them from one format to another. This book will help you learn Ruby Regular Expressions, a mini-programming language for all sorts of text processing needs. The book heavily leans on examples to present features of regular expressions on...

Learning a new programming language can be a daunting task, but Scala Succinctly makes it a simple matter. Author Chris Rose guides readers through the basics of Scala, from installation to syntax shorthand, so that they can get up and running quickly....

An introduction to CoffeeScript programming with an emphasis on clarity, abstraction and verification. Smooth CoffeeScript is a free book about CoffeeScript and programming. No previous programming knowledge is required. Over 200 pages and 35 exercises....

The Coder's Apprentice is a course book, written by Pieter Spronck, that is aimed at teaching Python 3 to students and teenagers who are completely new to programming. Contrary to many of the other books that teach Python programming, this book assumes no previous knowledge of programming on the part of the students, and contains numerous exer...

Learning the command line can be a difficult and intimidating task, but this book is designed to be your lighthouse in the modern computational storm. Unix is a 40 year old operating system that powers the internet, your phone, and the latest scientific research. This book aims to be a gateway to the world of computer programming, providing you wit...

A long pull of functions, combinators, & decorators, written in modern JavaScript. "Spent the afternoon reading @raganwald's JavaScript Allongé, the Six Edition. Highly recommended. Let the refactoring begin!" - Marcus Vorwaller "I think it's one of the best tech books I've read since Sedgewick's Algor...

ABAP (Advanced Business Application Programming) is a high-level programming language developed by SAP for programming business applications in the SAP environment. It is an unofficial and free SAP ABAP book created for educational purposes. All the content is extracted from Stack Overflow Documentation, which is written by many hardworking indivi...

This book makes JavaScript less challenging to learn for newcomers, by offering a modern view that is as consistent as possible. Highlights: - Get started quickly, by initially focusing on modern features. - Test-driven exercises and quizzes available for most chapters. - Covers all essential features of JavaScript, up to and including ES2020...

The JavaScript Beginner's Handbook follows the 80/20 rule: learn in 20% of the time the 80% of a topic. The author find this approach gives a well-rounded overview. This book does not try to cover everything under the sun related to JavaScript. It focuses on the core of the language, trying to simplify the more complex topics. The author h...

Python for Everybody is designed to introduce students to programming and software development through the lens of exploring data. You can think of the Python programming language as your tool to solve data problems that are beyond the capability of a spreadsheet. Python is an easy to use and easy to learn programming language that is freely availa...

How to Think Like a Computer Scientist is an introductory programming book based on the OCaml language. It is a modified version of Think Python by Allen Downey. It is intended for newcomers to programming and also those who know some programming but want to learn programming in the function-oriented paradigm, or those who simply want to learn OCam...

How to Think Like a Computer Scientist: Learning with Python - is an introduction to computer science using the Python programming language. It covers the basics of computer programming, including variables and values, functions, conditionals and control flow, program development and debugging. Later chapters cover basic algorithms and data structu...

Creative Scala is aimed at developers who have no prior experience in Scala. It is designed to give you a fun introduction to functional programming. We assume you have some familiarity with another programming language but little or no experience with Scala or other functional languages. We have three goals with this book: 1. To give an introd...

Python is a fun and extremely easy-to-use programming language that has steadily gained in popularity over the last few years. Developed over ten years ago by Guido van Rossum, Python's simple syntax and overall feel is largely derived from ABC, a teaching language that was developed in the 1980's. However, Python was also created to s...

In order to represent real life situations mathematically, we often use symbols to represent unknown quantities. We call these symbols variables. Each mathematical subject requires knowledge of manipulating expressions and equations to solve for a variable. Careers such as automobile accident investigators, quality control engineers, and insurance ...

This second volume of ReConFort, published open access, addresses the decisive role of constitutional normativity, and focuses on discourses concerning the legal role of constitutional norms. Taken together with ReConFort I (National Sovereignty), it calls for an innovative reassessment of constitutional history drawing on key categories to convey ...

This open access volume constitutes the refereed proceedings of the 27th biennial conference of the German Society for Computational Linguistics and Language Technology, GSCL 2017, held in Berlin, Germany, in September 2017, which focused on language technologies for the digital age. The 16 full papers and 10 short papers included in the proceeding...

This book describes the results of natural language processing and machine learning methods applied to clinical text from electronic patient records.It is divided into twelve chapters. Chapters 1-4 discuss the history and background of the original paper-based patient records, their purpose, and how they are written and structured. These initial ch...

This volume is the first ever collection devoted to the field of proof-theoretic semantics. Contributions address topics including the systematics of introduction and elimination rules and proofs of normalization, the categorial characterization of deductions, the relation between Heyting's and Gentzen's approaches to meaning, knowability...

This book focuses on the global cycles of energy, water and carbon, which are not only the essentials of our main energy carriers, the fossil fuels, but are also the building blocks of life. The book offers an overview of the basic scientific facts and relationships that are needed to understand today's energy generation and use, how they rela...