R中一个令人难以置信的基本问题但解决方案尚不清楚.
如何将一个字符向量分成单独的字符,即与paste(..., sep='')或相反stringr::str_c()？
比这更笨重的东西:
sapply(1:26, function(i) { substr("ABCDEFGHIJKLMNOPQRSTUVWXYZ",i,i) } )
"A" "B" "C" "D" "E" "F" "G" "H" "I" "J" "K" "L" "M" "N" "O" "P" "Q" "R" "S" "T" "U" "V" "W" "X" "Y" "Z"
是否可以以其他方式完成,例如strsplit(),stringr::*或其他任何事情？