r - R - 删除字符向量中以大写字母开头的字符串

Question

我有一个df：

df <- c("hello goodbye Delete Me", "Another Sentence good program", "hello world The End")

我要这个：

c("hello goodbye", "good program", "hello world")

我试过了：

df <- grep("^[A-Z]", df, invert = TRUE, value = TRUE)

但这会删除以大写字母开头的整个字符：

c("hello goodbye Delete Me", "hello world The End")

我该怎么做呢？

标签： rregexextractuppercase

Answer 1

您可以使用 -

trimws(gsub('[A-Z]\\w+', '', df))
#[1] "hello goodbye" "good program"  "hello world"