r - 创建正则表达式以从行值中删除字符串和字符

Question

我的数据框中有一列，如下所示:

branching_loc <- c("([preliminary_arm_1][antibiotic_arm] = '1') and [was_review_done]='1'",
                   "[preliminary_arm_1][antibiotic_arm]  = '1' and [was_review_done]=='1'",
                   "[preliminary_arm_1][antibiotic_arm]  = '1' and [was_review_done]=='1'",
                   "[preliminary_arm_1][antibiotic_arm]  = '1' and [was_review_done]=='1'")
                                                 
df <- data.frame(branching_loc)

现在我确实想仅从此行值中删除[preliminary_arm_1]。我正在努力用 R 语言创建正则表达式来执行此操作。请帮忙

Answer 1

可能的解决方案:

library(tidyverse)

df %>% 
  mutate(branching_loc = str_remove(branching_loc, "\\[preliminary_arm_1\\]"))

#>                                        branching_loc
#> 1 ([antibiotic_arm] = '1') and [was_review_done]='1'
#> 2 [antibiotic_arm]  = '1' and [was_review_done]=='1'
#> 3 [antibiotic_arm]  = '1' and [was_review_done]=='1'
#> 4 [antibiotic_arm]  = '1' and [was_review_done]=='1'