POSline TPC7030, Programming Manual

Page: 106 / 131

A4.
Commands for string processing
Command description
LEN To return the length of a string.
INSTR To search if one string exists inside antoher one.
LEFT$ To retrieve a given number of characters from the
left side of the target string.
MID$ To retrieve a given number of characters from
anywhere of the target string.
RIGHT$ To retrieve a given number of characters from the
right side of the target string.
TRIM_LEFT$ To return a copy of a string with leading blank
spaces stripped.
TRIM_RIGHT$ To return a copy of a string with trailing blank
spaces stripped.
ASC To return the decimal value for the ASCII code
for the first character of a given string.
CHR$ To return the character for a given ASCII value.
HEX$ To return a string that represents the hexadecimal
value (base 16) of the decimal argument.
OCT$ To return a string that represents the octal value
(base 8) of the decimal argument.
LCASE$ To return a copy of a string in which all uppercase
letters will be converted to lowercase letters.
UCASE$ To return a copy of a string in which all lowercase
letters will be converted to uppercase letters.
STR$ To convert a numeric expression to a string.
VAL To return the numeric value of a string expression
in interger form.
VALR To convert a string expression to a real number.
STRING$ To return a string containing the specified number
of the requested character.
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