Original Enhancement
Let a$ be a string expression,m, n be numeric expressions below.
Functions whose result is a string
SUBSTR$(a$,m,n) | Substring of a$ from m-th character to n-th character. |
MID$(a$,m,n) | n characters of a$ from m-th character. |
LEFT$(a$,n) | The first n characters of a$ |
RIGHT$(a$,n) | The last n characters of a$ |
The above functions are defined as follows.
DEF SUBSTR$(a$,m,n)=a$(m:n) DEF MID$(a$,m,n)=a$(m:m+n-1) DEF LEFT$(a$,n)=a$(1:n) DEF RIGHT$(a$,n)=a$(LEN(a$)-n+1:LEN(a$))
Functions whose result is numeric.
BLEN(a$) | The length of a$ in bytes. This function is prepared for handling multi-byte characters. |