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Are assignment to block variables is prohibited?

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Stephane Ducasse-3

Are assignment to block variables is prohibited?

Hi

I know that method arg are read only and you cannot assign to them.
Now what is the status of block arguments?
Because some old code of plotmorph is breaking.

Stef

Nicolai Hess-3-2

Re: Are assignment to block variables is prohibited?

Yes. But there is a setting for the compiler to load/compile code with errors.

2017-09-14 20:46 GMT+02:00 Stephane Ducasse <[hidden email]>:

Hi

I know that method arg are read only and you cannot assign to them.
Now what is the status of block arguments?
Because some old code of plotmorph is breaking.

Stef

Nicolai Hess-3-2

Re: Are assignment to block variables is prohibited?

2017-09-14 21:43 GMT+02:00 Nicolai Hess <[hidden email]>:

Yes. But there is a setting for the compiler to load/compile code with errors.

2017-09-14 20:46 GMT+02:00 Stephane Ducasse <[hidden email]>:
Hi

I know that method arg are read only and you cannot assign to them.
Now what is the status of block arguments?
Because some old code of plotmorph is breaking.

Stef

But using catalog, I can load plotmorph, even without enabling this setting.

Marcus Denker-4

Re: Are assignment to block variables is prohibited?

On 14 Sep 2017, at 22:00, Nicolai Hess <[hidden email]> wrote:

2017-09-14 21:43 GMT+02:00 Nicolai Hess <[hidden email]>:
Yes. But there is a setting for the compiler to load/compile code with errors.

2017-09-14 20:46 GMT+02:00 Stephane Ducasse <[hidden email]>:
Hi

I know that method arg are read only and you cannot assign to them.
Now what is the status of block arguments?
Because some old code of plotmorph is breaking.

Stef

But using catalog, I can load plotmorph, even without enabling this setting.

OCStoreIntoReadOnlyVariableError checks if you are compiling interactively or not.

signal

compilationContext interactive

ifFalse: [ ^ self crTrace ].

^ super signal

This way old code load fine, but you are not allowed to create such code while

coding… and you have to fix code when recompiling a method interactively

that has an assignment to an argument.

Marcus

Stephane Ducasse-3

Re: Are assignment to block variables is prohibited?

In reply to this post by Nicolai Hess-3-2

Yes I checked again and I do not get why it is barking with mark load it.
I will look at the plotmorph code later.

On Thu, Sep 14, 2017 at 10:00 PM, Nicolai Hess <[hidden email]> wrote:

>
>
> 2017-09-14 21:43 GMT+02:00 Nicolai Hess <[hidden email]>:
>>
>> Yes. But there is a setting for the compiler to load/compile code with
>> errors.
>>
>>
>> 2017-09-14 20:46 GMT+02:00 Stephane Ducasse <[hidden email]>:
>>>
>>> Hi
>>>
>>> I know that method arg are read only and you cannot assign to them.
>>> Now what is the status of block arguments?
>>> Because some old code of plotmorph is breaking.
>>>
>>> Stef
>>>
>
>
> But using catalog, I can load plotmorph, even without enabling this setting.
>
>