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 intuitive and readable.
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' %|% 'ragout', 'spaghetti' %&&% 'al' %-% 'dente' ) print(examples)
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.
Here is some pasta
code that shows how we can download a set of
chosen pictures from one of the many nice sites 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") }
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