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i++ [message #535214]

Fri, 21 May 2010 15:19

graa

Messages: 42
Registered: April 2010

Member

hi,

how i can do i++ in ocl ?

thanks

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Re: i++ [message #535222 is a reply to message #535214]

Fri, 21 May 2010 15:46

Ed Willink

Messages: 7503
Registered: July 2009

Senior Member

On 21/05/2010 16:19, graa wrote:
> hi,
>
> how i can do i++ in ocl ?
>
> thanks
OCL is a side effect free language, so it is impossible.

However if you look at why you want to do i++ there may be a solution.

For instance, one standard idiom that handles loop counters is

Sequence{1..size}->forAll(...)

Regards

Ed Willink

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Re: i++ [message #535252 is a reply to message #535214]

Fri, 21 May 2010 18:08

wafaa

Messages: 163
Registered: January 2010
Location: Egypt

Senior Member

hi graa

sylivana has replied to u

Sylvain EVEILLARD wrote on Tue, 18 May 2010 13:23

You can't have braces in OCL because you can't execute multiple operations in an OCL IF. And finally, you can't make assignments in OCL (<-).

For the increase of counter you can use an ATL workaround :
let fakeLet : OclAny = thisModule.refSetValue('counter',thisModule.counter + 1) in

it is not direct way, fake....

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