RewriteToolbuilder question

Hi,
i followed the video and opened the RewriteToolbuilder on some code in pharo4.0. i then tried to keep things simple and made a transformationrule,which i thought would not change anything, by just copying "‘@.Statements." into the lower left & right panels (without the " of course).i then press 'generate rule' and get a 'Syntax Error: end of Statement list encountered' with this specification: ^ ArithmeticError signal: 'Negative numbers canEnd of statement list encountered -> ''t be raised to float powers.' . but this part of the code in the upper left panel is just a copy of some unchanged standard pharo4.0 code. where did i go wrong?
werner

I don't know much about RewriteToolbuilder, so probably won't be the one to give a proper answer,

but to help someone else answer... could you narrow down which video with a link?

cheers -ben

On Thu, Jun 8, 2017 at 12:05 AM, werner kassens <[hidden email]> wrote:

Hi,
i followed the video and opened the RewriteToolbuilder on some code in pharo4.0. i then tried to keep things simple and made a transformationrule,which i thought would not change anything, by just copying "‘@.Statements." into the lower left & right panels (without the " of course).i then press 'generate rule' and get a 'Syntax Error: end of Statement list encountered' with this specification: ^ ArithmeticError signal: 'Negative numbers canEnd of statement list encountered -> ''t be raised to float powers.' . but this part of the code in the upper left panel is just a copy of some unchanged standard pharo4.0 code. where did i go wrong?
werner

Hi Mark,
the code from Number>>raisedTo:

    aNumber isInteger ifTrue: [
        "Do the special case of integer power"
        ^ self raisedToInteger: aNumber].
    aNumber isFraction ifTrue: [
        "Special case for fraction power"
        ^ (self nthRoot: aNumber denominator) raisedToInteger: aNumber numerator ].
    self < 0 ifTrue: [
        ^ ArithmeticError signal: 'Negative numbers can''t be raised to float powers.' ].
    0 = aNumber ifTrue: [^ self class one].    "Special case of exponent=0"
    1 = aNumber ifTrue: [^ self].    "Special case of exponent=1"
    0 = self ifTrue: [                "Special case of self = 0"
        aNumber < 0
            ifTrue: [^ (ZeroDivide dividend: self) signal]
            ifFalse: [^ self]].
    ^ (aNumber * self ln) exp        "Otherwise use logarithms"

Werner

p.s. Hi Ben, <g> yes, i wrote that email a bit too fast, the video from http://www.screencast.com/t/LCEl0hFl

On 06/07/2017 07:03 PM, Mark Rizun wrote:

Hi Werner,

I believe that I am the one to answer this question, but I need more information.

Please, could you send the code that you have in upper left panel. 

Cheers,

Mark

2017-06-07 18:46 GMT+02:00 Ben Coman <[hidden email]>:

I don't know much about RewriteToolbuilder, so probably won't be the one to give a proper answer,

but to help someone else answer... could you narrow down which video with a link?

cheers -ben

On Thu, Jun 8, 2017 at 12:05 AM, werner kassens <[hidden email]> wrote:

Hi,
i followed the video and opened the RewriteToolbuilder on some code in pharo4.0. i then tried to keep things simple and made a transformationrule,which i thought would not change anything, by just copying [hidden email] into the lower left & right panels (without the " of course).i then press 'generate rule' and get a 'Syntax Error: end of Statement list encountered' with this specification: ^ ArithmeticError signal: 'Negative numbers canEnd of statement list encountered -> ''t be raised to float powers.' . but this part of the code in the upper left panel is just a copy of some unchanged standard pharo4.0 code. where did i go wrong?
werner