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Author: Hadley Wickham
Publisher: "O'Reilly Media, Inc."
ISBN: 1491910542
Category : Computers
Languages : en
Pages : 201
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Book Description
Turn your R code into packages that others can easily download and use. This practical book shows you how to bundle reusable R functions, sample data, and documentation together by applying author Hadley Wickham’s package development philosophy. In the process, you’ll work with devtools, roxygen, and testthat, a set of R packages that automate common development tasks. Devtools encapsulates best practices that Hadley has learned from years of working with this programming language. Ideal for developers, data scientists, and programmers with various backgrounds, this book starts you with the basics and shows you how to improve your package writing over time. You’ll learn to focus on what you want your package to do, rather than think about package structure. Learn about the most useful components of an R package, including vignettes and unit tests Automate anything you can, taking advantage of the years of development experience embodied in devtools Get tips on good style, such as organizing functions into files Streamline your development process with devtools Learn the best way to submit your package to the Comprehensive R Archive Network (CRAN) Learn from a well-respected member of the R community who created 30 R packages, including ggplot2, dplyr, and tidyr
Author: Hadley Wickham
Publisher: "O'Reilly Media, Inc."
ISBN: 1491910542
Category : Computers
Languages : en
Pages : 201
Get Book Here
Book Description
Turn your R code into packages that others can easily download and use. This practical book shows you how to bundle reusable R functions, sample data, and documentation together by applying author Hadley Wickham’s package development philosophy. In the process, you’ll work with devtools, roxygen, and testthat, a set of R packages that automate common development tasks. Devtools encapsulates best practices that Hadley has learned from years of working with this programming language. Ideal for developers, data scientists, and programmers with various backgrounds, this book starts you with the basics and shows you how to improve your package writing over time. You’ll learn to focus on what you want your package to do, rather than think about package structure. Learn about the most useful components of an R package, including vignettes and unit tests Automate anything you can, taking advantage of the years of development experience embodied in devtools Get tips on good style, such as organizing functions into files Streamline your development process with devtools Learn the best way to submit your package to the Comprehensive R Archive Network (CRAN) Learn from a well-respected member of the R community who created 30 R packages, including ggplot2, dplyr, and tidyr
Author: Tomas Beuzen
Publisher: CRC Press
ISBN: 1000555062
Category : Computers
Languages : en
Pages : 243
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Book Description
Python Packages introduces Python packaging at an introductory and practical level that’s suitable for those with no previous packaging experience. Despite this, the text builds up to advanced topics such as automated testing, creating documentation, versioning and updating a package, and implementing continuous integration and deployment. Covering the entire Python packaging life cycle, this essential guide takes readers from package creation all the way to effective maintenance and updating. Python Packages focuses on the use of current and best-practice packaging tools and services like poetry, cookiecutter, pytest, sphinx, GitHub, and GitHub Actions. Features: The book’s source code is available online as a GitHub repository where it is collaborated on, automatically tested, and built in real time as changes are made; demonstrating the use of good reproducible and clear project workflows. Covers not just the process of creating a package, but also how to document it, test it, publish it to the Python Package Index (PyPI), and how to properly version and update it. All concepts in the book are demonstrated using examples. Readers can follow along, creating their own Python packages using the reproducible code provided in the text. Focuses on a modern approach to Python packaging with emphasis on automating and streamlining the packaging process using new and emerging tools such as poetry and GitHub Actions.
Author:
Publisher:
ISBN:
Category : Boxes
Languages : en
Pages : 1024
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Book Description
Author: Susan Blackaby
Publisher: Capstone
ISBN: 9781404801080
Category : Juvenile Nonfiction
Languages : en
Pages : 56
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Book Description
Explains how we get seeds, the different types of seeds, and the benefits of seeds.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 696
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Book Description
Author: Gerard Kelly
Publisher: Springer Science & Business Media
ISBN: 1461550114
Category : Technology & Engineering
Languages : en
Pages : 143
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Book Description
One of the greatest challenges facing package manufacturers is to develop reliable fine pitch thin packages with high leadcounts, capable of dissipating heat, and deliver them in volume to the market in a very short space of time. How can this be done? Firstly, package structures, materials, and manufacturing processes must be optimised. Secondly, it is necessary to predict the likely failures and behaviour of parts before manufacture, whilst minimising the amount of time and money invested in undertaking costly experimental trials. In a high volume production environment, any design improvement that increases yield and reliability can be of immense benefit to the manufacturer. Components and systems need to be packaged to protect the IC from its environment. Encapsulating devices in plastic is very cheap and has the advantage of allowing them to be produced in high volume on an assembly line. Currently 95% of all ICs are encapsulated in plastic. Plastic packages are robust, light weight, and suitable for automated assembly onto printed circuit boards. They have developed from low pincount (14-28 pins) dual-in-line (DIP) packages in the 1970s, to fine pitch PQFPs (plastic quad flat pack) and TQFPs (thin quad flat pack) in the 1980s-1990s, with leadcounts as high as 256. The demand for PQFPs in 1997 was estimated to be 15 billion and this figure is expected to grow to 20 billion by the year 2000.
Author: Cynthia Rylant
Publisher: Scholastic
ISBN: 9780531300510
Category : Juvenile Fiction
Languages : en
Pages : 32
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Book Description
Every year at Christmas a rich man rides a train through Appalachia and throws gifts to the poor children who are waiting, in order to repay a debt he owes the people who live there.
Author: Ellyn Satter
Publisher: Bull Publishing Company
ISBN: 1936693267
Category : Family & Relationships
Languages : en
Pages : 688
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Book Description
Widely considered the leading book involving nutrition and feeding infants and children, this revised edition offers practical advice that takes into account the most recent research into such topics as: emotional, cultural, and genetic aspects of eating; proper diet during pregnancy; breast-feeding versus; bottle-feeding; introducing solid food to an infant's diet; feeding the preschooler; and avoiding mealtime battles. An appendix looks at a wide range of disorders including allergies, asthma, and hyperactivity, and how to teach a child who is reluctant to eat. The author also discusses the benefits and drawbacks of giving young children vitamins.
Author: Donald Kirk David
Publisher:
ISBN:
Category : Retail trade
Languages : en
Pages : 844
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Book Description
Author: Hal Greenhouse
Publisher: William Andrew
ISBN: 1437778771
Category : Science
Languages : en
Pages : 365
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Book Description
Hermeticity of Electronic Packages is a book about the integrity of sealed packages to resist foreign gases and liquids penetrating the seal or an opening (crack) in the packageùespecially critical to the reliability and longevity of electronics. The author explains how to predict the reliability and the longevity of the packages based on leak rate measurements and the assumptions of impurities. Non-specialists in particular will benefit from the author's long involvement in the technology. Hermeticity is a subject that demands practical experience, and solving one problem does not necessarily give one the background to solve another. Thus, the book provides a ready reference to help deal with day to day issues as they arise. The book gathers in a single volume a great many issues previously available only in journalsùor only in the experience of working engineers. How to define the ""goodness"" of a seal? How is that seal measured? How does the integrity of the seal affect circuit reliability? What is the significance of the measured integrity of the seal? What is the relationship of Residual Gas Analysis and the seal integrity? The handbook answers these questions and more, providing an analysis of nearly 100 problems representative of the wide variety of challenges that actually occur in industry today.
