TI-BASIC:Length
Command Summary
Returns the length of a string.
Command Syntax
length(string)
Menu Location
This command can only be found in the catalog. Press:
- 2nd CATALOG to access the command catalog
- L to skip to commands starting with L
- scroll down to length( and select it
TI-83/84/+/SE
2 bytes
This command is used to determine the length of a string. Unlike the Dim( command for lists and matrices, it cannot be used to change this length, as there is no null character for strings (the null value is 0 for lists and matrices).
:length("HELLO
5
Keep in mind that the length is measured in the number of tokens, and not the number of letters in the string. For example, although the sin( command contains 4 characters ("s", "i", "n", and "("), it will only add 1 to the total length of a string it's in. The execution time for length( is directly proportional to the length of the string.
Advanced Uses
The code for looping over each character (technically, each token) of a string involves length(:
:For(N,1,length(Str1 ... use sub(Str1,N,1 for the Nth character ... :End
