Home » U++ Library support » U++ Library : Other (not classified elsewhere) » Format NFormat and so on.
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| Re: Format NFormat and so on. [message #3150 is a reply to message #3147] |
Tue, 09 May 2006 10:52   |
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mirek
Messages: 14256
Registered: November 2005
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Ultimate Member |
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| lundman wrote on Tue, 09 May 2006 03:18 |
It's always the trivial things I have to ask for 
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I do not think this is trivial....
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What is the deal with Format and NFormat. I have not really found any documentation giving details to its use. But looking at sources, it seems %` (percent-backtick) prints date/time, but
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%` is "empty" - default format. In fact, ` can be used as delimiter of format code; the trouble is that unlike classic printf, Format allows you to define your own formats with id's, means you sometimes need delimiter to tell apart id and text..
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always in US order. No help for SetDateFormat, and only t.cpp has an example that does not change the format (when used with %`).
%5.2g and %5.2f give me asserts. The docs seem to favour %n instead, and sometimes %5.2n works, but with more than 2 digits in the decimal place, sometimes asserts. %5n seems to work ok, just not the way I was hoping.
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Not sure where is the problem:
#include <Core/Core.h>
CONSOLE_APP_MAIN
{
LOG(Format("%'", GetSysDate()));
SetLanguage(LNG_('C','S','C','Z'));
LOG(Format("%'", GetSysDate()));
SetLanguage(LNG_('E','N','U','S'));
SetDateFormat("%2:R/%1:d %4:Day");
LOG(Format("%'", GetSysDate()));
LOG(Format("%6.4g", 1.23));
}
.log:
* e:\out\MSC71.Debug_full\Format.exe 09.05.2006 10:47:16, user: cxl
05/09/2006
09.05.2006
V/2006 Tuesday
1.23
If troubles persist, send the code!
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What is the difference between NFormat and Format? The examples seem to use both.
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They are the same. You should use straight Format.
(Two names are just some echoes of the past - originally, Format behaved like Sprintf, using C standard library. Then we decided to extend it for any Values and new was named NFormat to keep BWC while deprecating Format. When our code was Format clean, we hijacked Format for NFormat behaviour. Happened 2 years ago anyway 
Mirek
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| Re: Format NFormat and so on. [message #3152 is a reply to message #3150] |
Tue, 09 May 2006 12:15 |
lundman
Messages: 175
Registered: March 2006
Location: Tokyo
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Experienced Member |
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%` is "empty" - default format. In fact, ` can be used as delimiter of format code; the trouble is that unlike classic printf, Format allows you to define your own formats with id's, means you sometimes need delimiter to tell apart id and text..
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Yeah I suspected as much reading Format.cpp, but alas, without Documentation, or examples, of how to use that code...
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If troubles persist, send the code!
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Only example I found was
uppsrc/Core/t.cpp: SetDateFormat(t_("date-format\a%2:02d/%3:02d/%1:4d"));
and not having any specs on it, I swapped %2 with %3 thinking that would do it, but it did not.
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| Re: Format NFormat and so on. [message #3177 is a reply to message #3152] |
Wed, 10 May 2006 04:09 |
lundman
Messages: 175
Registered: March 2006
Location: Tokyo
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Experienced Member |
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Cut out the extra junk I had from the example, and used yours and it works fine.
Left with:
// "Wednesday 10/05/2006 10:23:43"
SetDateFormat("%4:Day %3:02d/%2:02d/%1:4d");
Which will do.. should really give the user the option to chose this, but it would be too complicated to expect a user to be able to enter a magic string like that, when even I don't know fully what the deal is
The double problem is probably more something to do with that I should cast it to date/time to print it.
double size, cps;
return Format("%5.2n MB Remaining at %5.2n KB/s should take %` seconds",
size/1024.0, cps, size / 1024.0 / cps);
54793.43359 MB Remaining at 1715.27 KB/s should take 31 seconds
[Updated on: Wed, 10 May 2006 04:12] Report message to a moderator |
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