Define ! operator as an alias of Numo::NArray#inplace

[masa16]

a.inplace + 1

is equivalent to

!a + 1

Any problem?

• In Ruby, ! is used to be added to the name of some destructive method.
• Some ruby committer seems declined to change the semantics of +=.

[kojix2]

！！

[sonots]

I've recently talked with matz. We are thinking to

1. If += method is defined, call it
2. Define +! operator newly

etc

[sonots]

!a looks like returning boolean value

[naitoh]

I agree. > !a looks like returning boolean value

[masa16]

I see. I leave this issue just an idea.