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digitalmars.D.learn - determining type a pointer points to.

reply div0 <div0 users.sourceforge.net> writes:
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Is there a function to do this?
I Didn't find anything in traits or std.traits

ty

- --
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk
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Aug 22 2009
next sibling parent reply Jarrett Billingsley <jarrett.billingsley gmail.com> writes:
On Sat, Aug 22, 2009 at 5:58 PM, div0<div0 users.sourceforge.net> wrote:

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 Is there a function to do this?
 I Didn't find anything in traits or std.traits

 ty



template PtrElemType(T : T*) { alias T PtrElemType; }
template PtrElemType(T) { static assert(false, "YOU FAIL"); }
Aug 22 2009
parent div0 <div0 users.sourceforge.net> writes:
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Jarrett Billingsley wrote:

 On Sat, Aug 22, 2009 at 5:58 PM, div0<div0 users.sourceforge.net> wrote:

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 Is there a function to do this?
 I Didn't find anything in traits or std.traits

 ty



 template PtrElemType(T : T*) { alias T PtrElemType; }
 template PtrElemType(T) { static assert(false, "YOU FAIL"); }



That's the one. ta.
For some reason I was convinced it would be in phobos. doh.

- --
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk
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Aug 23 2009
prev sibling parent reply Stewart Gordon <smjg_1998 yahoo.com> writes:
div0 wrote:

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 Is there a function to do this?
 I Didn't find anything in traits or std.traits




Not a function as such, but....

     typeof(*p)

Stewart.
Aug 22 2009
parent reply Jarrett Billingsley <jarrett.billingsley gmail.com> writes:
On Sat, Aug 22, 2009 at 6:55 PM, Stewart Gordon<smjg_1998 yahoo.com> wrote:

 div0 wrote:

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 Is there a function to do this?
 I Didn't find anything in traits or std.traits



 <snip>

 Not a function as such, but....

 =A0 =A0typeof(*p)



If p is int[], that gets you int instead of an error.  I have no idea why.
Aug 22 2009
parent Stewart Gordon <smjg_1998 yahoo.com> writes:
Jarrett Billingsley wrote:

 On Sat, Aug 22, 2009 at 6:55 PM, Stewart Gordon<smjg_1998 yahoo.com> wrote:




    typeof(*p)



 If p is int[], that gets you int instead of an error.  I have no idea why.



For everyone's benefit, the bug report is:
http://d.puremagic.com/issues/show_bug.cgi?id=1381

Stewart.
Aug 23 2009