Feature #11129: block-level hash destructuring only works for the last argument

• Status: Open
• Assignee: -
• Target version: -

[seanlinsley (Sean Linsley)]

[{a: 2}].each_with_index{ |a:, index| }
SyntaxError: unexpected tIDENTIFIER

[{a: 2}].each_with_index{ |(a:), index| }
SyntaxError: unexpected tLABEL

[{a: 2}].each_with_index.map{ |hash, index| [index, hash] }.map{ |index, a:| p [index, a] }
== [0, 2]

It seems like the second example should work, in the same way that parentheses in || destructure arrays.

[seanlinsley (Sean Linsley)]

I'd rename this bug to something like "block-level hash destructuring only works for the last argument" if Redmine let you rename bugs...

[hsbt (Hiroshi SHIBATA)]

• Subject changed from each_with_index doesn't work with block-level hash destructuring to block-level hash destructuring only works for the last argument

[jeremyevans0 (Jeremy Evans)]

• Tracker changed from Bug to Feature
• ruby -v deleted (2.2)
• Backport deleted (2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN)