[sqr-users] The use of ltrim function

["Jennifer Lee" <j-lee@groupwise.umn.edu>]

Hi,

It is true that if one is to trim a character from the left of a
string, this function of let command works very well.    Why is it that
if this function is used to trim a string of characters, the result is
unpredictable?

Here's the story:

Let $string_whole =
'/l99/dbexample/PRODUCTION/fa/aidyear2005/umncr/CRAA05IN'

let $string_ltrim = '/l99/dbexample/PRODUCTION/fa/aidyear2005/umncr/'

let $string_result = ltrim($string_whole, $string_ltrim)

In two different instances (or environments) where the same code is
executed, the content of $string_result varies:
Instance #1: 'CRAA05IN'
Instance #2: 'RAA05IN'

Does one always have to use a combination of instri, length, and substr
to get a substring out of another string?  What are the ways folks use
often for this type of operation?

Thanks in advance,

Jennifer


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