Head and Tail functions

[eried]

How to use head and tail with strings inside a program?

It seems quite inconsistent:

Code:

HOME:
tail("hola"); // return empty matrix
head("hola"); // return the same string

Syntax error if used uppercades (with msgbox)

Code:

CAS:
tail("hola"); // correct
head("hola"); // correct

Weird error if used uppercased (no msgbox) but return:
of(["Error: Bad Argument Value"])

Inside a program it seems to work like as in HOME, with or without CAS. in front

[komame]

It seems to be a small bug here.
I hope it will be fixed soon, but now we can use a workaround for strings:

Code:

CHAR(head(ASC("hola")));
CHAR(tail(ASC("hola")));

[cyrille de brébisson]

hello,

head and tail are CAS functions, so use of them for home/PPL stuff is "discouraged".

Assuming str contains your string, in home/PPL, str(1,1) will do a head and str(2,100000) a tail.

Cyrille