>>>>> "AHA" == Alan Haggai Alavi <alanhag...@alanhaggai.org> writes:
AHA> split considers the pattern given to it, as a delimiter within the AHA> expression. Let us consider the three cases: >> my @elems1 = split(/\d/,$var); AHA> Digits are the delimiters. Delimiters are stripped out of the string AHA> by split. Hence, when digits are stripped out of a numeric expression, AHA> the result will be undef. returned strings from the input to split cannot be undef as the input itself is defined (split will coerce an undef input to a null string). as john said, grabbed delims that don't match will return undef as do regexes outside of split. >> my @elems2 = split(/./,$var); AHA> Again, anything is considered to be a delimiter due to the '.' (match AHA> anything). Thus, again, the result is undef. huh? . IS the delim which means each char is a delim and only the text between them (null strings) will be returned in a list context. >> my @elems3 = split(//,$var); AHA> When the pattern is omitted, split splits on whitespace. Since the AHA> string does not contain whitespaces, the string cannot be split and AHA> split returns the string as it is. again, wrong. that will split on the null string which matches between each pair of chars. so it returns a list of single chars. uri -- Uri Guttman ------ u...@stemsystems.com -------- http://www.sysarch.com -- ----- Perl Code Review , Architecture, Development, Training, Support ------ --------- Gourmet Hot Cocoa Mix ---- http://bestfriendscocoa.com --------- -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
