The nchar() function in the base package is used to measure the typical length of the string. One major issues is it’s inability to handle factor values robustly.
nchar('hello world') # Usage of the nchar function.
##  11
factor.Example <- factor(c(1, 1, 0, 0), labels=c("success", "fail")) nchar(factor.Example) # Using nchar function with factors.
## Error in nchar(factor.Example): 'nchar()' requires a character vector
Alternatively str_length() package could also be used to measure string lengths. In comparisson the str_length() package handles NA characters more accurately as nchar(NA) returns 2 while str_length() returns NA and also handles factor values appropriately.
str_length('hello world') # Usage of the str_length function.
##  11
str_length(factor_example) # Using str_length with factor variables.
## Error in stri_length(string): object 'factor_example' not found