From: shyouhei@... Date: 2016-04-21T00:29:04+00:00 Subject: [ruby-core:75055] [Ruby trunk Feature#12304][Feedback] String#split with a block Issue #12304 has been updated by Shyouhei Urabe. Status changed from Open to Feedback There are methods like String.each_char.slice_when (and friends). See http://ruby-doc.org/core-2.3.0/Enumerable.html#method-i-slice_when Doesn't this solve your problem? Then, can you show us a bit more details about your use case? ---------------------------------------- Feature #12304: String#split with a block https://bugs.ruby-lang.org/issues/12304#change-58176 * Author: Tsuyoshi Sawada * Status: Feedback * Priority: Normal * Assignee: ---------------------------------------- I would like `String#split` to take an optional block, similar to `String#scan` with a block. Suppose I have a regex pattern with captures, and I want to iterate over matches while having access to the information in last match `$~`. In such case, I can use `scan`, and access the last match in the block during iteration: ~~~ruby "abcabd".scan(/(a)|(b)/) do |s| if $1 then ... # `s` is `"a"`, `"a"` elsif $2 then ... # `s` is `"b"`, `"b"` end end ~~~ In my use case, I need to iterate over not only the matching patterns, but **also the non-matched substrings in between them**. For such cases, I need to use `split` instead of `scan`. And I would like to do something like the following: ~~~ruby "abcabd".split(/((a)|(b))/) do |s| if $2 then ... # `s` is `"a"`, `"a"` elsif $3 then ... # `s` is `"b"`, `"b"` else ... # `s` is `"c"`, `"d"`, and `$~` should be `nil` end end ~~~ With the current functionalities, I attempted to do this: ~~~ruby "abcabd".split(/((a)|(b))/).each do ... end ~~~ but it does not work the way I wanted; within the `each` block, the last match value `$~` is `nil`, and I cannot access the information. -- https://bugs.ruby-lang.org/ Unsubscribe: