• "Dave B." <nospam thankyou.com> Jul 28 2008
• torhu <no spam.invalid> Jul 28 2008
• "Koroskin Denis" <2korden gmail.com> Jul 28 2008
• Bill Baxter <dnewsgroup billbaxter.com> Jul 28 2008
• Jesse Phillips <jessekphillips gmail.com> Jul 28 2008

"Dave B." <nospam thankyou.com> writes:

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

torhu <no spam.invalid> writes:

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.

"Koroskin Denis" <2korden gmail.com> writes:

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

Bill Baxter <dnewsgroup billbaxter.com> writes:

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

Jesse Phillips <jessekphillips gmail.com> writes:

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?




 
 
 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.