Cannot return negative value?

ruby-talk
1

I got the following error :

parse error, unexpected tUMINUS_NUM

  userCredential.flagged? ? return -1 : return 1

what's wrong ?

I tried also

userCredential.flagged? ? return (-1) : return 1

same problem.....

2

This seems to work:

  return userCredentials.flagged? ? -1 : 1

Farrel

···

On 15/01/07, Josselin <josselin@wanadoo.fr> wrote:

I got the following error :

parse error, unexpected tUMINUS_NUM

  userCredential.flagged? ? return -1 : return 1

what's wrong ?

I tried also

userCredential.flagged? ? return (-1) : return 1

same problem.....

3

Josselin wrote:

I got the following error :

parse error, unexpected tUMINUS_NUM

userCredential.flagged? ? return -1 : return 1

You mean

return userCredential.flagged? -1 : 1

?

I am not sure in Ruby, but if it's the same than in C or anywhere else, the ternary operator evaluates to a value, and you can not really execute things like this inside...

Cheers,
Peter

···

__
http://www.rubyrailways,com

4

Hi,

I got the following error :

parse error, unexpected tUMINUS_NUM

userCredential.flagged? ? return -1 : return 1

what's wrong ?

when saying

  userCredential.flagged? ? (return -1) : (return 1)

or even

  userCredential.flagged? ? begin return -1 end : begin return 1 end

you will probably see that the return statement is definitely in the
wrong place.

Bertram

···

Am Montag, 15. Jan 2007, 20:30:08 +0900 schrieb Josselin:

--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de

5

Hi,

At Mon, 15 Jan 2007 20:30:08 +0900,
Josselin wrote in [ruby-talk:234078]:

I got the following error :

parse error, unexpected tUMINUS_NUM

  userCredential.flagged? ? return -1 : return 1

what's wrong ?

Because `return' is a statement. In Ruby, a "statement" is
defined as an expression which has lower precedence and can't
appear directly in another expression.

···

--
Nobu Nakada

6

thanks a lot first time I was using this kind of return... ;-))

···

On 2007-01-15 12:43:21 +0100, Peter Szinek <peter@rubyrailways.com> said:

Josselin wrote:

I got the following error :

parse error, unexpected tUMINUS_NUM

userCredential.flagged? ? return -1 : return 1

You mean

return userCredential.flagged? -1 : 1

?

I am not sure in Ruby, but if it's the same than in C or anywhere else, the ternary operator evaluates to a value, and you can not really execute things like this inside...

Cheers,
Peter

__
http://www.rubyrailways,com

7

hanks a lot first time I was using this kind of return... ;-))

···

On 2007-01-15 12:41:09 +0100, "Farrel Lifson" <farrel.lifson@gmail.com> said:

On 15/01/07, Josselin <josselin@wanadoo.fr> wrote:

I got the following error :

parse error, unexpected tUMINUS_NUM

  userCredential.flagged? ? return -1 : return 1

what's wrong ?

I tried also

userCredential.flagged? ? return (-1) : return 1

same problem.....

This seems to work:

  return userCredentials.flagged? ? -1 : 1

Farrel

8

This seems to work though

userCredentials.flagged? ? (return -1) : (return 1)

Farrel

···

On 15/01/07, Peter Szinek <peter@rubyrailways.com> wrote:

Josselin wrote:
> I got the following error :
>
> parse error, unexpected tUMINUS_NUM
>
> userCredential.flagged? ? return -1 : return 1
You mean

return userCredential.flagged? -1 : 1

?

I am not sure in Ruby, but if it's the same than in C or anywhere else,
the ternary operator evaluates to a value, and you can not really
execute things like this inside...

Cheers,
Peter