RE: [sv-ec] 5.7 example question

Dave,

You refer to "queue and dynamic array concatenation".

However, the LRM says, 
"the source of an assignment can be a complex expression involving array
slices or concatenations".

This implies it applies to all types of arrays, not just queues and
dynamic arrays.

Please clarify.

Thanks,
Shalom

>-----Original Message-----
>From: Rich, Dave [mailto:Dave_Rich@mentor.com]
>Sent: Thursday, November 10, 2005 6:40 PM
>To: Bresticker, Shalom; sv-ec@eda.org
>Subject: RE: [sv-ec] 5.7 example question
>
>Shalom,
>
>There were lots of attempts to remove overloading of the
>concatenation
>braces {}. Some succeeded (assignment patterns now have to be
>preceded
>with a ' mark}, some didn't (queue and dynamic array
>concatenation).
>
>When you do a queue index operation like
>
>q = {q[0:$],n};
>
>or
>
>q = {q[0:pos],n,q[pos:$]);
>
>The queue dimension is split into its individual elements, and
>then
>recombined as part of the concatenation.
>
>This same principal can be applied to dynamic array dimensions.
>
>Dave
>
>
>
>> -----Original Message-----
>> From: owner-sv-ec@eda.org [mailto:owner-sv-ec@eda.org] On
>Behalf Of
>> Bresticker, Shalom
>> Sent: Wednesday, November 09, 2005 11:25 PM
>> To: sv-ec@eda.org
>> Subject: [sv-ec] 5.7 example question
>>
>> Hi,
>>
>> What do you say about the last example in 5.7 ?
>>
>> QUOTE:
>> Similarly, the source of an assignment can be a complex
>expression
>> involving array slices or concatenations. For
>> example:
>>
>> string d[1:5] = '{ "a", "b", "c", "d", "e" };
>> string p[];
>> p = { d[1:3], "hello", d[4:5] };
>>
>> The preceding example creates the dynamic array p with
>contents: "a",
>> "b", "c", "hello", "d", "e".
>> :ENDQUOTE
>>
>> Is the assignment to p in a legal form?
>>
>> If so, why?
>> If not, how should it be done?
>>
>> I got the following response from Brad Pierce:
>>
>> "I think the committees agreed to "punt" on this issue,
>because no one
>> provided a detailed semantics for how it was supposed to
>work, and no
>> entity considered the issue important enough to vote 'no'
>over it.
>>
>> As far as I know, there is no other way to get the splicing
>behavior
>of
>> that example.  Without it, you would need to write
>>
>>       p = '{ d[1], d[2], d[3], "hello", d[4], d[5] };
>>
>> But that methodology breaks down if the indices are
>parameterized
>> instead of simple literals.  In that case, the only
>alternative is to
>> use two for loops."
>>
>> Thanks,
>> Shalom
>>