Returns a logical indicating whether the first letter of a character string
is uppercase.
Usage
isFirstLetterUpperCase(x)
Arguments
- x
character string
Value
logical; if TRUE, the first letter of the input string is
uppercase.
Details
If the input is an empty string, the function returns TRUE.
Author
Samuel Leung, Derek Chiu
Examples
isFirstLetterUpperCase("peanut butter")
#> [1] FALSE
isFirstLetterUpperCase("peanut Butter")
#> [1] FALSE
isFirstLetterUpperCase("Samuel butter")
#> [1] TRUE
isFirstLetterUpperCase("")
#> [1] TRUE