Feature #4335: String#split for empty string is always empty array

• Status: Rejected
• Assignee: -
• Target version: 2.0.0

[phasis68 (Heesob Park)]

Here is ruby's behavior:

' '.split('/')
# => [" "]
''.split('/')
# => []
'/'.split('/')
# => []

Here is Python's behavior:

 >>> ' '.split('/')
 [' ']
 >>> ''.split('/')
 ['']
 >>> '/'.split('/')
 ['', '']

Is there any chance to let ''.split('/') return [''] instead of []?

[naruse (Yui NARUSE)]

• Status changed from Open to Feedback

=begin
We don't think we should follow Python's result
and your this proposal doesn't have enough reason to change current behavior even if it breaks compatibility.

I don't say there is no chance but it should be hard that you can show such strong reason.
=end

[nobu (Nobuyoshi Nakada)]

=begin
'/'.split('/', -1) returns ["", ""].
I don't think it's necessary to be default.
=end

[nahi (Hiroshi Nakamura)]

• Description updated (diff)
• Status changed from Feedback to Rejected

It's intended feature, and -1 is prepared for your purpose as Nobu said. #3575

[sawa (Tsuyoshi Sawada)]

• Description updated (diff)