vignettes/pasta_intro.md

In chrisschuerz/pasta: Noodlyfied Pasting of Strings

title: "Pasta: Noodlyfied Pasting of Strings" author: "Christoph Schürz, Daniel Klotz" date: "2016-12-06" output: knitr:::html_vignette: number_sections: yes vignette: > %\VignetteIndexEntry{Pasta: Noodlyfied Pasting of Strings} %\VignetteEngine{knitr::rmarkdown_notangle} %\VignetteEncoding{UTF-8}

Introduciton (Antipasto)

Base R provides a functionality to concatenate strings through the paste functions. Using paste is nice and dandy, but the code can get quite difficult to read. Especially if two paste functions need to be nested.

Pasta provides a set of infix functions to make concatenation noodlier. This can make the code more in intuitive and readable.

Examples (Primo Piatto)

Here are some tasty examples of the provided functionality:

  require(pasta, quietly = TRUE)
  #
  examples <- c(
  'macaroni' %_% 'sauce',
  'ravioli' %-% 'recipe',
  'spaghetti' %.% 'code',
  'fussili' %//% 'farfalle',
  'pasta' %&% 'sciutta',
  'noodle' %&&% 'soup',
  'carbonara' %|% 'ragù',
  'spaghetti' %&&% 'al' %-% 'dente'
  )
  print(examples)

## [1] "macaroni_sauce"     "ravioli-recipe"     "spaghetti.code"    
## [4] "fussili/farfalle"   "pastasciutta"       "noodle soup"       
## [7] "carbonara|ragù"     "spaghetti al-dente"

As a less naive example let us assume that we want to create a fancy animation with some screen-caps of our favorite spaghetti-western. In the following is some pasta code that shows how you can download a set of chosen pictures from one of the many nice cites that provide the captures

  cap_url <- "http://www.caps.media/195/9-rio-bravo/full/rio-bravo-movie-screencaps.com"
  jpg_urls <- cap_url %-% c(4,5,264:268) %.% "jpg"
  for (i in 1:length(jpg_urls)) {
      download.file(jpg_urls[i], c("rio_bravo" %_% i %.% "jpg"), mode = "wb")
  }

chrisschuerz/pasta documentation built on May 13, 2019, 6:56 p.m.