From: Rick DeNatale <rick.denatale@...>
Date: 2010-09-29T05:23:22+09:00
Subject: Re: puts and return

On Tue, Sep 28, 2010 at 4:14 PM, Kirk Haines <wyhaines@gmail.com> wrote:
> On Tue, Sep 28, 2010 at 2:03 PM, Jim Haungs <jhaungs@gmail.com> wrote:
>> 10.times do |i|
>>  puts 'too big' and break if i > 5
>>  puts "#{i} ok"
>> end
>>
>> I would expect this loop to quit after printing 0 to 5, but it executes
>> all 10 times. I know "puts" return nil, but isn't "and" (as opposed to
>> &&) supposed to execute both sides of the expression even if one side
>> evaluates to false?
>
> && is what you want, to get that effect.

No that doesn't work, since puts returns nil and nil || whatever
doesn't evaluate whatever.

And

puts "Too big" || break if i > 5

Doesn't cause the break.

I think this is because break really isn't an expression.

The best solution seems to be

if i > 5
  puts "Too big"
  break
end

Both because it works, and I don't put too much weight on marginally
shorter code.


-- 
Rick DeNatale

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