On Saturday, 25 October 2014 at 20:51:04 UTC, Walter Bright wrote:
http://www.quora.com/What-are-the-algorithms-required-to-solve-all-problems-using-C++-in-any-competitive-coding-contest
Anyone want to review these and see what we should add to
Phobos?
Dear Mr. Bright.
Just can not now comment. Please see this code. test code and
profililing log.
src\phobos\std\stdio.d: lines 361-373
-------------------------------
*/ /*file and line in this is demo solve.
Just for profilling. I now more safety way. */
this(string name, in char[] stdioOpenmode = "rb", string file
= __FILE__, size_t line = __LINE__) @safe
{
import std.conv : text;
import std.exception : ErrnoException;
/*this(errnoEnforce(.fopen(name, stdioOpenmode),
text("Cannot open file `", name, "' in
mode `",
stdioOpenmode, "'")),
name); */
if (!.fopen(name, stdioOpenmode)) throw new
ErrnoException(text("Cannot open file `", name, "' in mode `",
stdioOpenmode, "'"), file, line);
}
file.d(test
code)-----------------------------------------------------------
import std.stdio;
void main(string[] args)
{
/*int i;
int a[2];
if(true) i = 3;
a[i] = 3;*/
auto fobj = File("hello2.d");
scope(failure) writefln("scope(failure)");
scope(exit) writefln("scope(exit)");
writefln("end");
}
profiler log for file.d with old version
phobos----------------------
------------------
1 _Dmain
7 main
_D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa 8 89 80
8 _D6object19__T11_doPostblitTaZ11_doPostblitFNaNbNiAaZv
------------------
8 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
_D6object19__T11_doPostblitTaZ11_doPostblitFNaNbNiAaZv 8 9 9
------------------
1 main
_Dmain 1 40831907 40831897
1 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
------------------
main 0 0 0
1 _Dmain
7 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
======== Timer Is 3579545 Ticks/Sec, Times are in Microsecs
========
Num Tree Func Per
Calls Time Time Call
1 11407010 11407007 11407007 _Dmain
8 24 22 2 pure nothrow
char[] object._dup!(const(char), char)._dup(const(char)[])
8 2 2 0 pure nothrow
@nogc void object._doPostblit!(char)._doPostblit(char[])
1 0 0 0 main
new version-------------------------------------------
------------------
1 _Dmain
7 main
_D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa 8 102 88
8 _D6object19__T11_doPostblitTaZ11_doPostblitFNaNbNiAaZv
------------------
8 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
_D6object19__T11_doPostblitTaZ11_doPostblitFNaNbNiAaZv 8 14 14
------------------
1 main
_Dmain 1 2336665 2336654
1 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
------------------
main 0 0 0
1 _Dmain
7 _D6object14__T4_dupTxaTaZ4_dupFNaNbAxaZAa
======== Timer Is 3579545 Ticks/Sec, Times are in Microsecs
========
Num Tree Func Per
Calls Time Time Call
1 652782 652779 652779 _Dmain
8 28 24 3 pure nothrow
char[] object._dup!(const(char), char)._dup(const(char)[])
8 3 3 0 pure nothrow
@nogc void object._doPostblit!(char)._doPostblit(char[])
1 0 0 0 main
I not check the other functions, because not sure that this style
of coding is enough object oriented. It object only because that
here you have objects.
if you need it, let's work.
Best regards.
