From: kodnin@...
Date: 2020-09-26T07:40:25+00:00
Subject: [ruby-core:100168] [Ruby master Bug#17193] Endless method definition doesn't work with lambdas

Issue #17193 has been updated by kodnin (David Boot).


wanabe (_ wanabe) wrote in #note-1:
> I think this is an irb problem, not a ruby problem.
> 
> ```
> $ ruby -ve 'def bar() = lambda { |x| x * x };p bar'
> ruby 3.0.0dev (2020-09-25T22:52:04Z master 137fa5b27e) [x86_64-linux]
> #<Proc:0x00005582978039e0 -e:1 (lambda)>
> ```

I can confirm that this works indeed.

```
$ ruby -e 'def bar() = ->(x) { x * x }; puts bar.(3)'
9
```

----------------------------------------
Bug #17193: Endless method definition doesn't work with lambdas
https://bugs.ruby-lang.org/issues/17193#change-87738

* Author: kodnin (David Boot)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.0preview1 (2020-09-25 master 0096d2b895) [x86_64-darwin19]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
Endless method definition doesn't work with lambdas. Please check the attached screenshot.

``` ruby
def foo() = 123
# => :foo

foo
# => 123

def bar() = lambda { |x| x * x }
# I expected the method to be defined.

def bar() = ->(x) { x * x }
# Same issue.
```

Nice to have:

``` ruby
def bar = lambda { |x| x * x }
def bar = ->(x) { x * x }
```

---Files--------------------------------
Screenshot 2020-09-26 at 09.19.24.png (714 KB)


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