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 the package development philosophy used in the package known as the tidyverse (and beyond). In the process, you'll work with devtools, usethis, roxygen2, and testthat, a set of R packages th...(展开全部)

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 the package development philosophy used in the package known as the tidyverse (and beyond). In the process, you'll work with devtools, usethis, roxygen2, and testthat, a set of R packages th...(展开全部)

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...(展开全部)

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...(展开全部)

Great play, that introduced the word "robot" into English, looks to a future in which all workers are automatons. They revolt when they acquire souls (i.e., when they gain the ability to hate) and the resulting catastrophe make for a powerful and deeply moving theatrical experience. Paul Selver translation.

R.U.R.--written in 1920, premiered in Prague in 1921, and first performed in New York in 1922--garnered worldwide acclaim for its author and popularized the word robot. Mass-produced as efficient laborers to serve man, Capek's Robots are an android product--they remember everything but think of nothing new. But the Utopian life they provide ultimately lacks meaning, and the hum...(展开全部)

简介：我是R天使，雷狮，欢迎各位前来参加凹凸大赛

一本集大成之作，致敬了早期的黑暗风格 A legendás Sátántangóban megérkezett Irimiás, a regényformát a valóságba átvezető Háború és háború bevezetéseként pedig megjött Ézsaiás. Most újabb nagy Krasznahorkai-hős tűnik fel a láthatáron, báró Wenckheim, a soha nem változó Ígéret beteljesítőjének tekintett ember, aki Buenos Airesből tér haza. Haza: hozzánk, napjaink Magyarországára és ősei reményveszte...(展开全部)

一本集大成之作，致敬了早期的黑暗风格 A legendás Sátántangóban megérkezett Irimiás, a regényformát a valóságba átvezető Háború és háború bevezetéseként pedig megjött Ézsaiás. Most újabb nagy Krasznahorkai-hős tűnik fel a láthatáron, báró Wenckheim, a soha nem változó Ígéret beteljesítőjének tekintett ember, aki Buenos Airesből tér haza. Haza: hozzánk, napjaink Magyarországára és ősei reményveszte...(展开全部)

There may be a corner of the world where the name J.R.R. Tolkien is unknown, but you would be hard-pressed to find it. Since their publication, The Hobbit and The Lord of the Rings have been published in every major language of the world. And though he single-handedly gave a mythology to the English and was beloved by millions, John Ronald Reuel Tolkien remained refreshingly un...(展开全部)