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digitalmars.D.learn - tuples

reply Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
Is there currently any way to get something like

Tuple!(int,"i") t = tuple(5);

to work?
Oct 31 2009
next sibling parent reply zkp0s <gerar1995 gmail.com> writes:
Ellery Newcomer Wrote:


 Is there currently any way to get something like
 
 Tuple!(int,"i") t = tuple(5);
 
 to work?



Tuples are compile-time constructions. They are immutable.
And btw the types do not coincide
Nov 02 2009
parent zkp0s <gerar1995 gmail.com> writes:
 Ellery Newcomer Wrote:
 

 Is there currently any way to get something like
 
 Tuple!(int,"i") t = tuple(5);
 
 to work?






Also they are used like:
alias Tuple!(int,5) FOOBAR;
FOOBAR [0] a_uint = FOOBAR[1]; //declares a_uint as an uint with value 5;

http://www.digitalmars.com/d/2.0/tuple.html
Nov 02 2009
prev sibling parent reply Ellery Newcomer <ellery-newcomer utulsa.edu> writes:
Ellery Newcomer wrote:

 Is there currently any way to get something like
 
 Tuple!(int,"i") t = tuple(5);
 
 to work?



Doh. It looks like

Tuple!(int,"i") t = tuple!(int,"i")(5);

should work, but I'm getting the following error

/home/ellery/download/dmd2035/dmd2/linux/bin/../../src/phobos/std/typecons.d(514):
Error: template std.typecons.tuple(T...) declaration T is already defined

any ideas?
Nov 02 2009
parent zkp0s <wtf wtf.wtf> writes:
Ellery Newcomer Wrote:


 Ellery Newcomer wrote:

 Is there currently any way to get something like
 
 Tuple!(int,"i") t = tuple(5);
 
 to work?



 Doh. It looks like
 
 Tuple!(int,"i") t = tuple!(int,"i")(5);
 
 should work, but I'm getting the following error
 
 /home/ellery/download/dmd2035/dmd2/linux/bin/../../src/phobos/std/typecons.d(514):
 Error: template std.typecons.tuple(T...) declaration T is already defined
 
 any ideas?



Ah that std.typecons tuple, not the variadic template tuple;
I assume you are trying to initialize the tuple like

 Tuple!(int,"i") t = tuple!(5);
Nov 02 2009