Hi!
I have quite often used "!" negation operator familiar from other
languages. For example:
/* If string does not match the pattern, then terminate the script. */
if ( ! jcs:regex( $pattern, $string ) ) {
terminate 'Invalid input string!';
}
However, I have not found this method in the official SLAX
documentation or SLAX operators list. Based on my example above, the
suggested solution seems to be to check if jcs:regex returned an empty
node-set or not using jcs:empty:
if ( jcs:empty( jcs:regex( $pattern, $string ) ) ) {
terminate 'Invalid input string!';
}
Just out of curiosity, is there a difference between those two methods?
thanks,
Martin
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