Re: [Pharo-users] Number is not accepted by UI

Hi Max, Pharo doesn't have syntax for prefix operator like "-". The parser does accepts a "-" before literal numbers but it's not possible for arbitrary expressions. However you have the message #negated . negatedWidth ^ self width negated Cheers, Camille On 16 juil. 2014, at 00:16, Verkoster Info <info@derVerkoster.de> wrote:

Hi,

I am using latest Pharo 3.0 + vm.

I have a method width with width

^ 115 * self ratio. in my understanding it returns a Number.

When I try to create a method negatedWidth

^ - (self width).

the UI tells me that only Numbers may be negated. I am not able to save the method. Am I on a wrong path or should that work and if how can I avoid the UI error message?

Regards

Max