Lead Data Scientist Question:
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Explain me nchar() in R string manipulation?
Answer:
To find out if elements of a character vector are non-empty strings or not then nzchar is the fastest way.
Keywords
character
Usage
nchar(x, type = “chars”, allowNA = FALSE, keepNA = NA)
nzchar(x, keepNA = FALSE)
Arguments
a. x
Basically, a character vector or a vector will be restricted to a character vector. Giving a factor is an error.
b. type
character string: partial matching to one of c(“bytes”, “chars”, “width”).
c. allowNA
Should NA will return for invalid multibyte strings or “bytes”-encoded strings
d. keepNA
The default for nchar(), NA, means to use keepNA = TRUE unless type is “width”. Used to be hardcoded to FALSE in R versions ≤ 3.2.0.
Keywords
character
Usage
nchar(x, type = “chars”, allowNA = FALSE, keepNA = NA)
nzchar(x, keepNA = FALSE)
Arguments
a. x
Basically, a character vector or a vector will be restricted to a character vector. Giving a factor is an error.
b. type
character string: partial matching to one of c(“bytes”, “chars”, “width”).
c. allowNA
Should NA will return for invalid multibyte strings or “bytes”-encoded strings
d. keepNA
The default for nchar(), NA, means to use keepNA = TRUE unless type is “width”. Used to be hardcoded to FALSE in R versions ≤ 3.2.0.
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