Format
length(E)
Returns
The length of the data associated with E.
Args
E: text, list, file, or vector
world << length("Hi")This outputs, “2”, the length of the string “Hi”.
world << length(list(1,2,3))This outputs, “3”, the length of the list.
world << length(file("test.txt"))This outputs the length of the file.
Note
In strings containing non-ASCII characters, this is the length in bytes, not characters; a character may span multiple bytes. Use
length_char()to work with character counts instead of bytes. See the Unicode section for more information.
For vectors, the length is the order of the vector, as in 2 for a 2D vector or 3 for a 3D vector. See vector.len.