• Sergey Kovrov (2/2) Mar 06 2009 I cannot find any information about immutable keyword. I presume it is a...
• bearophile (4/5) Mar 06 2009 I think it's the new (correct) name for invariant.
• Sergey Kovrov (2/2) Mar 06 2009 From playing with compiler looks like immutable and invariant are practi...
• Robert Fraser (6/9) Mar 12 2009 From the newsgroup discussions, it's just a change of name, with the
• Stewart Gordon (4/5) Mar 06 2009
• Jesse Phillips (5/12) Mar 06 2009 I'm not sure what is the real reason for it's existence, but it seems

Sergey Kovrov <kovrov+digitalmars gmail.com> writes:

I cannot find any information about immutable keyword. I presume it is a
storage class and should be described in "Declarations" manual page, but it is
not. On the other hand it is mentioned in changelog and some manual pages. Is
it an alias for invariant or const, or something completely different?

-- serg.

bearophile <bearophileHUGS lycos.com> writes:

Sergey Kovrov:

Is it an alias for invariant or const, or something completely different?<

I think it's the new (correct) name for invariant.

Bye,
bearophile

Sergey Kovrov <kovrov+digitalmars gmail.com> writes:

From playing with compiler looks like immutable and invariant are practically
interchangeable. And typeof reports that invariant is really immutable. I
personally like immutable keyword better, but wonder if it is just a change of
name or something more?

-- serg.

Robert Fraser <fraserofthenight gmail.com> writes:

Sergey Kovrov wrote:
 From playing with compiler looks like immutable and invariant are practically
interchangeable. And typeof reports that invariant is really immutable. I
personally like immutable keyword better, but wonder if it is just a change of
name or something more?
 
 -- serg.

 From the newsgroup discussions, it's just a change of name, with the 
exception that only invariant can be used for class invariants:

class Foo {
     invariant() { }
}

Stewart Gordon <smjg_1998 yahoo.com> writes:

Sergey Kovrov wrote:
 I cannot find any information about immutable keyword.

<snip>

http://d.puremagic.com/issues/show_bug.cgi?id=2572

Stewart.

Jesse Phillips <jessekphillips gmail.com> writes:

On Fri, 06 Mar 2009 08:58:04 -0500, Sergey Kovrov wrote:

 I cannot find any information about immutable keyword. I presume it is a
 storage class and should be described in "Declarations" manual page, but
 it is not. On the other hand it is mentioned in changelog and some
 manual pages. Is it an alias for invariant or const, or something
 completely different?
 
 -- serg.

I'm not sure what is the real reason for it's existence, but it seems 
many people prefer the term immutable over invariant. So I guessed that 
Walter is planning on changing the name to immutable. He might keep both 
in there, but I really don't think that is a good idea.