如何在R中的字符串结尾删除双空格？

Question

我试图修正一些细胞在一个蹒跚。我感兴趣的列包含在开始或结束时带有空格和双空格的字符串。

我问

• Merge Multiple spaces to single space; remove trailing/leading spaces
• How to remove extra white space between words inside a character vector using?
• How to remove all whitespace from a string?
• How to trim leading and trailing whitespace in R?

这是我在做什么

重复的例子，以前看到这些职位

library(dplyr) 

mtcars2 = tbl_df(mtcars) %>% 
    mutate(name = rownames(mtcars)) %>% 
    mutate(name = gsub("^ *|(?<=) | *$", "", name, perl = TRUE)) %>% 
    mutate(name = gsub("^\\s+|\\s+$", "", name)) %>% 
    mutate(name = iconv(name, from = "", to = "ASCII//TRANSLIT", sub = "")) 

head(mtcars2, 3) 

而且这样做，一些双空格坚持后的结果是

# A tibble: 3 × 12 
    mpg cyl disp hp drat wt qsec vs am gear carb   name 
    <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>   <chr> 
1 21.0  6 160 110 3.90 2.620 16.46  0  1  4  4  Mazda RX4 
2 21.0  6 160 110 3.90 2.875 17.02  0  1  4  4 Mazda RX4 Wag 
3 22.8  4 108 93 3.85 2.320 18.61  1  1  4  1 Datsun 710 

但在我的数据集！

是否有一个更通用的命令来删除字符串末尾的空格？提前谢谢了 ！

Answer 1

您是否试过trimws()函数？

> trimws(' hello ') 
[1] "hello"