• bioinfornatics (8/8) Mar 15 2013 Dear,
• Andrea Fontana (3/11) Mar 15 2013 Have you tried to cache front() result and read next block on
• bioinfornatics (4/19) Mar 15 2013 that is ok. Just missed the \n the followed code should work
• Andrea Fontana (12/32) Mar 15 2013 int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
• bioinfornatics (4/39) Mar 17 2013 As you said that do not works i update the code with some
• Andrea Fontana (12/58) Mar 17 2013 Your code works if you use .writeln instead of .array. This why
• bioinfornatics (2/63) Mar 17 2013 yes that was a reference problem using dup fix it. Thanks
• Andrea Fontana (3/71) Mar 18 2013 Maybe you should check for dup vs local var performance (on big

"bioinfornatics" <bioinfornatics fedoraproject.org> writes:

Dear,

By using CTFE I try to get a generic range to read array or a 
file as a phobos range. code hosted here: 
http://dpaste.dzfl.pl/1f2bcf39

that works fine for array but for a File instance .eof seem to 
not return true a right time.

Soemone could say what happen ?

Thanks

"Andrea Fontana" <nospam example.com> writes:

On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics wrote:
 Dear,

 By using CTFE I try to get a generic range to read array or a 
 file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof seem to 
 not return true a right time.

 Soemone could say what happen ?

 Thanks

Have you tried to cache front() result and read next block on 
popFront()?

"bioinfornatics" <bioinfornatics fedoraproject.org> writes:

On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics wrote:
 Dear,

 By using CTFE I try to get a generic range to read array or a 
 file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof seem to 
 not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block on 
 popFront()?

that is ok. Just missed the \n the followed code should work 
http://dpaste.dzfl.pl/1f2bcf39

You are welcome to take it :)

"Andrea Fontana" <nospam example.com> writes:

On Friday, 15 March 2013 at 16:11:38 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics wrote:
 Dear,

 By using CTFE I try to get a generic range to read array or a 
 file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof seem 
 to not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block on 
 popFront()?

 that is ok. Just missed the \n the followed code should work 
 http://dpaste.dzfl.pl/1f2bcf39

 You are welcome to take it :)

int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
std.file.write("/tmp/filename", a);

File f = File("/tmp/filename", "r");
auto r = GenericRange!File(f,1);

r.filter!"a.length > 0 && a[0] != 0"().writeln;

output:
[[0], [0], [0], [0], [0], [0]]

but i think output expected is:
[[1], [1], [2], [3], [5], [8]]

Caching front() and reading buffer from popFront() did the trick 
for me.

"bioinfornatics" <bioinfornatics fedoraproject.org> writes:

On Friday, 15 March 2013 at 16:40:26 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 16:11:38 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics 
 wrote:
 Dear,

 By using CTFE I try to get a generic range to read array or 
 a file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof seem 
 to not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block on 
 popFront()?

 that is ok. Just missed the \n the followed code should work 
 http://dpaste.dzfl.pl/1f2bcf39

 You are welcome to take it :)

 int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
 std.file.write("/tmp/filename", a);

 File f = File("/tmp/filename", "r");
 auto r = GenericRange!File(f,1);

 r.filter!"a.length > 0 && a[0] != 0"().writeln;

 output:
 [[0], [0], [0], [0], [0], [0]]

 but i think output expected is:
 [[1], [1], [2], [3], [5], [8]]

 Caching front() and reading buffer from popFront() did the 
 trick for me.

As you said that do not works i update the code with some
unittest could you please to share your version ? you can use
fork from dpast -> http://dpaste.dzfl.pl/1f2bcf39e. Thanks

"Andrea Fontana" <nospam example.com> writes:

On Sunday, 17 March 2013 at 18:36:17 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 16:40:26 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 16:11:38 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana 
 wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics 
 wrote:
 Dear,

 By using CTFE I try to get a generic range to read array or 
 a file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof seem 
 to not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block 
 on popFront()?

 that is ok. Just missed the \n the followed code should work 
 http://dpaste.dzfl.pl/1f2bcf39

 You are welcome to take it :)

 int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
 std.file.write("/tmp/filename", a);

 File f = File("/tmp/filename", "r");
 auto r = GenericRange!File(f,1);

 r.filter!"a.length > 0 && a[0] != 0"().writeln;

 output:
 [[0], [0], [0], [0], [0], [0]]

 but i think output expected is:
 [[1], [1], [2], [3], [5], [8]]

 Caching front() and reading buffer from popFront() did the 
 trick for me.

 As you said that do not works i update the code with some
 unittest could you please to share your version ? you can use
 fork from dpast -> http://dpaste.dzfl.pl/1f2bcf39e. Thanks

Your code works if you use .writeln instead of .array. This why 
*it seems* that struct member "U buffer" is returned by reference.

Check this. It passes unittest.
http://dpaste.dzfl.pl/828f7cc4

I move buffer inside popFront function, so "value = rawWrite(..)" 
assign every time a reference to a different "buffer". In your 
code it returns always the same member variable so, output array 
was an array of 8 identical reference to last read value (e.g. 
[8]) Maybe you can achieve the same in other way (for example 
using idup?).

I hope it works.

"bioinfornatics" <bioinfornatics fedoraproject.org> writes:

On Sunday, 17 March 2013 at 20:21:23 UTC, Andrea Fontana wrote:
 On Sunday, 17 March 2013 at 18:36:17 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 16:40:26 UTC, Andrea Fontana wrote:
 On Friday, 15 March 2013 at 16:11:38 UTC, bioinfornatics 
 wrote:
 On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana 
 wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics 
 wrote:
 Dear,

 By using CTFE I try to get a generic range to read array 
 or a file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof 
 seem to not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block 
 on popFront()?

 that is ok. Just missed the \n the followed code should work 
 http://dpaste.dzfl.pl/1f2bcf39

 You are welcome to take it :)

 int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
 std.file.write("/tmp/filename", a);

 File f = File("/tmp/filename", "r");
 auto r = GenericRange!File(f,1);

 r.filter!"a.length > 0 && a[0] != 0"().writeln;

 output:
 [[0], [0], [0], [0], [0], [0]]

 but i think output expected is:
 [[1], [1], [2], [3], [5], [8]]

 Caching front() and reading buffer from popFront() did the 
 trick for me.

 As you said that do not works i update the code with some
 unittest could you please to share your version ? you can use
 fork from dpast -> http://dpaste.dzfl.pl/1f2bcf39e. Thanks

 Your code works if you use .writeln instead of .array. This why 
 *it seems* that struct member "U buffer" is returned by 
 reference.

 Check this. It passes unittest.
 http://dpaste.dzfl.pl/828f7cc4

 I move buffer inside popFront function, so "value = 
 rawWrite(..)" assign every time a reference to a different 
 "buffer". In your code it returns always the same member 
 variable so, output array was an array of 8 identical reference 
 to last read value (e.g. [8]) Maybe you can achieve the same in 
 other way (for example using idup?).

 I hope it works.

yes that was a reference problem using dup fix it. Thanks

"Andrea Fontana" <nospam example.com> writes:

On Sunday, 17 March 2013 at 22:12:42 UTC, bioinfornatics wrote:
 On Sunday, 17 March 2013 at 20:21:23 UTC, Andrea Fontana wrote:
 On Sunday, 17 March 2013 at 18:36:17 UTC, bioinfornatics wrote:
 On Friday, 15 March 2013 at 16:40:26 UTC, Andrea Fontana 
 wrote:
 On Friday, 15 March 2013 at 16:11:38 UTC, bioinfornatics 
 wrote:
 On Friday, 15 March 2013 at 14:40:17 UTC, Andrea Fontana 
 wrote:
 On Friday, 15 March 2013 at 14:31:43 UTC, bioinfornatics 
 wrote:
 Dear,

 By using CTFE I try to get a generic range to read array 
 or a file as a phobos range. code hosted here: 
 http://dpaste.dzfl.pl/1f2bcf39

 that works fine for array but for a File instance .eof 
 seem to not return true a right time.

 Soemone could say what happen ?

 Thanks

 Have you tried to cache front() result and read next block 
 on popFront()?

 that is ok. Just missed the \n the followed code should 
 work http://dpaste.dzfl.pl/1f2bcf39

 You are welcome to take it :)

 int[] a = [ 0, 1, 1, 2, 3, 5, 8 ];
 std.file.write("/tmp/filename", a);

 File f = File("/tmp/filename", "r");
 auto r = GenericRange!File(f,1);

 r.filter!"a.length > 0 && a[0] != 0"().writeln;

 output:
 [[0], [0], [0], [0], [0], [0]]

 but i think output expected is:
 [[1], [1], [2], [3], [5], [8]]

 Caching front() and reading buffer from popFront() did the 
 trick for me.

 As you said that do not works i update the code with some
 unittest could you please to share your version ? you can use
 fork from dpast -> http://dpaste.dzfl.pl/1f2bcf39e. Thanks

 Your code works if you use .writeln instead of .array. This 
 why *it seems* that struct member "U buffer" is returned by 
 reference.

 Check this. It passes unittest.
 http://dpaste.dzfl.pl/828f7cc4

 I move buffer inside popFront function, so "value = 
 rawWrite(..)" assign every time a reference to a different 
 "buffer". In your code it returns always the same member 
 variable so, output array was an array of 8 identical 
 reference to last read value (e.g. [8]) Maybe you can achieve 
 the same in other way (for example using idup?).

 I hope it works.

 yes that was a reference problem using dup fix it. Thanks

Maybe you should check for dup vs local var performance (on big 
file, of course)