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Bug #9291
closedarray splatting a nil works, but hash splatting a nil does not
Description
irb(main):001:0> [*nil]
=> []
irb(main):002:0> {**nil}
TypeError: no implicit conversion of nil into Hash
Updated by rits (First Last) almost 11 years ago
this could be used like this: method a: 1, **({b: 1} if condition)
Updated by rits (First Last) about 10 years ago
So is there a reason * and ** should work differently for nil?
Updated by marcandre (Marc-Andre Lafortune) about 10 years ago
- Assignee set to matz (Yukihiro Matsumoto)
Currently, *
uses explicit conversion to array (to_a
, not to_ary
), while **
uses implicit conversion to hash (to_hash
, not to_h
).
So your question about nil
can be explained this way, since nil.to_a #=> []
but nil.to_hash
is not defined.
The real question is then: shouldn't **
be using explicit conversion to hash with to_h?
Updated by mame (Yusuke Endoh) almost 5 years ago
- Status changed from Open to Rejected
- Backport deleted (
1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN)
Closing as it is by design. If you want the change, please open a feature request ticket with a use case.
Updated by mame (Yusuke Endoh) almost 5 years ago
- Is duplicate of Bug #8507: Keyword splat does not convert arg to Hash added
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