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Re: set vs copy?
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Re: set vs copy?


  • Subject: Re: set vs copy?
  • From: Shane Stanley <email@hidden>
  • Date: Wed, 15 Sep 2010 21:36:20 +1000
  • Thread-topic: set vs copy?

On 15/9/10 6:38 PM, "Thomas Fischer" <email@hidden> wrote:

> Yes, my only question is how do you know which is which?
> That
> set A to A & 4
> and
> set end of A to 4
> are different things seems to me to be an implementation issue, which I can
> only find by testing.

If the statement says "set x to ...", it's an assignment. Other forms --
"set end of x to ..." or "set item n of x to ..." -- modify.

> There is a vague hint on ASLG p.94:

It's less vague on page 28:

> Whether you can add elements to or remove elements from an object depends on
> the class and the element. For example, a text object is immutable‹you cannot
> add or remove text once the object is created. For a list object, you cannot
> remove items, but you can use the set command to add an item to the beginning
> or end:

--
Shane Stanley <email@hidden>



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References: 
 >Re: set vs copy? (From: Thomas Fischer <email@hidden>)

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