Ruby gives some warning

[Albert Schlef]

(I'm using Ruby 1.8.6.)

The following expression...

rand(rand 3)

...makes ruby emit a warning: "warning: parenthesize argument(s) for
future version"

It seems that I have to write is as "rand(rand(3))". Why? What potential
problem could there be in "rand(rand 3)" ?

 

[Justin Collins]

(I'm using Ruby 1.8.6.)

The following expression...

rand(rand 3)

...makes ruby emit a warning: "warning: parenthesize argument(s) for
future version"

It seems that I have to write is as "rand(rand(3))". Why? What potential
problem could there be in "rand(rand 3)" ?

This does not happen in 1.8.7 or 1.9.1, so I assume they have found a
way around this.

Even "rand rand 3" works.

-Justin

 

[Albert Schlef]

This does not happen in 1.8.7 or 1.9.1, so I assume they have found a
way around this.

Justin, thanks for the info!

(I've just checked 1.8.7's ChangeLog, and, indeed, I saw that this
warning has been removed. I'll have to upgrade my Ubuntu.)