March 2018
Intermediate to advanced
528 pages
13h 2m
Portuguese (Portugal, Brazil)
Content preview from R para Data Science
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Ferramentas | 215
#> 4 These days a chicken leg is a rare dish. a chicken
#> 5 Rice is often served in round bowls. <NA> <NA>
#> 6 The juice of lemons makes fine punch. <NA> <NA>
#> # ... with 714 more rows
Assim como str_extract(), se você quiser todas as combinações para cada string,
precisará de str_ m atch _ all().
Exercícios
1. Encontre todas as palavras que vêm depois de um "número", como "one", "two",
"three" etc. Retire tanto o número quanto a palavra.
2. Encontre todas as contrações. Separe as partes antes e depois do apóstrofo.
Substituindo Combinações
str_replace() e str_replace_all() permitem que você substitua combinações com
novas st
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.