Using them as parameter modifiers in functions, what is the difference between "in", "const" and "final"?

e.g.

void func(final int i)
{...}

vs

void func(in int i)
{...}

vs

void func(const int i)
{...}

Thanks

Dave B. wrote:
> Using them as parameter modifiers in functions, what is the difference between "in", "const" and "final"?
> 
> e.g.
> 
> void func(final int i)
> {...}
> 
> vs
> 
> void func(in int i)
> {...}
> 
> vs
> 
> void func(const int i)
> {...}
> 
> Thanks

Currently, I think that 'const' and 'in' are the same.  While 'final' is not implemented, and I can't recall what it was supposed to do.

On Mon, 28 Jul 2008 13:24:12 +0400, Dave B. <nospam@thankyou.com> wrote:

> Using them as parameter modifiers in functions, what is the difference between "in", "const" and "final"?
>
> e.g.
>
> void func(final int i)
> {...}
>
> vs
>
> void func(in int i)
> {...}
>
> vs
>
> void func(const int i)
> {...}
>
> Thanks

in, out and inout are explained here very well:
http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=digitalmars.D.learn&artnum=6440

in - is a do-nothing modifier, since it is a default behaviour.
const - variable is a constant value in the function scope. D2 only
final - not supported. use const instead

Koroskin Denis wrote:
> On Mon, 28 Jul 2008 13:24:12 +0400, Dave B. <nospam@thankyou.com> wrote:
> 
>> Using them as parameter modifiers in functions, what is the difference between "in", "const" and "final"?
>>
>> e.g.
>>
>> void func(final int i)
>> {...}
>>
>> vs
>>
>> void func(in int i)
>> {...}
>>
>> vs
>>
>> void func(const int i)
>> {...}
>>
>> Thanks
> 
> in, out and inout are explained here very well:
> http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=digitalmars.D.learn&artnum=6440 
> 
> 
> in - is a do-nothing modifier, since it is a default behaviour.
> const - variable is a constant value in the function scope. D2 only
> final - not supported. use const instead

That's about D1 though.  At least at one point, Walter said that 'in' would mean 'final const' in D2.  I don't know if it's panned out that way or not.

--bb

On Tue, 29 Jul 2008 09:45:51 +0900, Bill Baxter wrote:

> Koroskin Denis wrote:
>> On Mon, 28 Jul 2008 13:24:12 +0400, Dave B. <nospam@thankyou.com> wrote:
>> 
>>> Using them as parameter modifiers in functions, what is the difference between "in", "const" and "final"?
>>>
>>> e.g.
>>>
>>> void func(final int i)
>>> {...}
>>>
>>> vs
>>>
>>> void func(in int i)
>>> {...}
>>>
>>> vs
>>>
>>> void func(const int i)
>>> {...}
>>>
>>> Thanks
>> 
>> in, out and inout are explained here very well: http://www.digitalmars.com/pnews/read.php?
server=news.digitalmars.com&group=digitalmars.D.learn&artnum=6440
>> 
>> 
>> in - is a do-nothing modifier, since it is a default behaviour. const - variable is a constant value in the function scope. D2 only final - not supported. use const instead
> 
> That's about D1 though.  At least at one point, Walter said that 'in' would mean 'final const' in D2.  I don't know if it's panned out that way or not.
> 
> --bb

I thought with all the changes that happened final was thrown out.