On Sun, Oct 17, 2010 at 8:46 AM, 冷雨 [email protected] wrote:
I think that /A/ and /(A)/ are almost equivalent,
but why can’t I use /(A)/ to split string?
as documented, you can, but w a different behaviour/result for split
(from ruby core)
=== Implementation from String
str.split(pattern=$;, [limit]) -> anArray
Divides str into substrings based on a delimiter, returning an array of
If pattern is a String, then its contents are used as the
delimiter when splitting str. If pattern is a single
space, str is split on whitespace, with leading whitespace and runs of
contiguous whitespace characters ignored.
If pattern is a Regexp, str is divided where the pattern
matches. Whenever the pattern matches a zero-length string, str is split
into individual characters. If pattern contains groups, the
respective matches will be returned in the array as well.