[ruby-core:32697] Re: [Ruby 1.9-Feature#3845][Open] "in" infix operator

Hi,

2010/9/29 Roger Pack <[e-mail]>:
> I like it. =A0There's a kind of elegance in it
>
> if a in [1,2,3]
> =A0 =A0p ' it is in 1,2,3'
> end
>
> It works well with my head. =A0+1


Thanks, but it is a bit different from my original suggestion.
My suggestion does not require brackets:

  if a in 1,2,3
    p 'it is in 1,2,3'
  end

a in [1,2,3] is slightly verbose (for me) and inefficient because
it creates new array object when evaluated.
If you want to write array there, you can use splat operator:

  ary =3D [1,2,3]
  if a in *ary
    p 'it is in ary'
  end

--=20
Yusuke Endoh <[e-mail]>