From: spinutids@... Date: 2016-05-03T07:15:04+00:00 Subject: [ruby-core:75318] [Ruby trunk Feature#12333] `String#concat`, `Array#concat`, `String#prepend` to take multiple arguments Issue #12333 has been updated by Satoru Horie. File multi_concat_prepend.patch added I have written a patch. And, there are some points to ask * What is the appropriate behavior when calling concat/prepend without argument? * The code attached now returns just self * What should happen when writing ar.concat(ar, ar)? * ar = [1]; ar.concat(ar, ar) #=> [1,1,1]? or [1,1,1,1]? * ar << ar << ar returns [1,1,1,1], of course because this is just a sequence of binary operations * However, I feel "ar.concat(ar, ar)" saying "append present content of the array twice to the array", meaning [1,2,1,2,1,2] * The code attached returns [1,1,1,1], for now, just for the simplicity of implementation ---------------------------------------- Feature #12333: `String#concat`, `Array#concat`, `String#prepend` to take multiple arguments https://bugs.ruby-lang.org/issues/12333#change-58446 * Author: Tsuyoshi Sawada * Status: Open * Priority: Normal * Assignee: ---------------------------------------- I would like `String#concat`, `Array#concat`, `String#prepend` to take multiple arguments ~~~ruby s = "" s.concat("a", "b", "c") a.prepend("A", "B", "C") s # => "ABCabc" a = [] a.concat(["a"], ["b", "c"]) a # => ["a", "b", "c"] ~~~ ---Files-------------------------------- multi_concat_prepend.patch (2.94 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: