Datalogic A20 Handbuch PDF herunterladen (Seite 430)

100

101

Commands and Functions I-L Impact Reference Guide

Datalogic Automation Inc. 5-20

LCASE()

This function converts the string argument to lower case. If the argument is undef, the result is undef.

Example:

var_string = LCASE("ALLLOWERCASE") yields var_string = alllowercase

LEFT()

This function creates a string from the leftmost characters of the first argument. The second argument is the

number of characters to use. Example:

var_string = LEFT("This string",4) yields var_string = This

LEN()

This function returns an integer value indicating a string’s length. If the argument is undef, the result is

undef. Example:

stringsize = LEN ("This") yields stringsize = 4

This function compares a string to a string pattern. The pattern can contain a wild-card or joker character.

The wild card character * matches multiple characters. The joker character "?" matches a single character.

To look for * or ? in the string, use the "~" character as an escape character. Example:

If "Bigstring" like "Big*" then

match_bool=True

endif

yields

match_bool = True

Example:

If "Bigstring" like "Big?tring" then

match_bool=True

endif

yields

match_bool = True

Example:

If "Big*string" like "Big~*string" then

match_bool=True

endif

yields

match_bool = True

LINE INPUT

(CPM Only) This function reads a record from an open file. This example reads a record from file number 1

and assigns it to the variable in_string.

line input #1, in_string

LOG()

This function calculates the natural log of the argument. If the argument is less than or equal to zero, the

result is undef. Example:

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