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NEWS: Hash-to-keywords automatic conversion is now warned

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A follow up for 16c6984bb9..b5b3afadfa.  [Feature #14183]
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Yusuke Endoh 2019-08-31 07:03:27 +09:00
parent 38e08db48e
commit a1e588d1a7
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NEWS
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@ -19,6 +19,25 @@ sufficient information, see the ChangeLog file or Redmine
* Method reference operator, <code>.:</code> is introduced as an
experimental feature. [Feature #12125] [Feature #13581]
* Preparations for the redesign of keyword arguments towards Ruby 3.
[Feature #14183]
* Automatic conversion from a Hash to keyword arguments is deprecated:
when a method call passes a Hash at the last argument, and when the
called method accepts keywords, it is warned.
Please add a double splat operator.
def foo(key: 42); end; foo({key: 42}) # warned
def foo(**kw); end; foo({key: 42}) # warned
def foo(key: 42); end; foo(**{key: 42}) # OK
def foo(opt={}); end; foo( key: 42 ) # OK
* Non-symbol keys are allowed as a keyword argument.
def foo(**kw); p kw; end; foo("str" => 1) #=> {"str"=>1}
* Automatic conversion of keyword arguments and positional ones is warned.
[Feature #14183]
* Proc.new and proc with no block in a method called with a block is warned
now.