Hi,
How can I zero-pad using Format ? In C, using printf it's done using an extra 0 digit in for the width: '%04d' with parameter 3 will print '0003'. Wouldn't this be useful for FPC's Format as well, or is there another way ?
Micha
Mailing lists / fpc-devel / 2006-06
Format with zero padding
9 messages · 4 people ·
- Micha Nelissen 4
- Marco van de Voort 2
- Vinzent Hoefler 2
- Michael Van Canneyt 1
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Micha Nelissen wroteHow can I zero-pad using Format ?
RTFM. :-)
SysUtils.Format ('%.4D', Some_Int);Vinzent.
How can I zero-pad using Format ? In C, using printf it's done using an extra 0 digit in…
Micha Nelissen wrote 6 lines
Hi,
How can I zero-pad using Format ? In C, using printf it's done using an
extra 0 digit in for the width: '%04d' with parameter 3 will print
'0003'. Wouldn't this be useful for FPC's Format as well, or is there
another way ?
in fpc it's a dot.
Try
%.4dThis is in the docs:
http://www.freepascal.org/docs-html/rtl/sysutils/format.html
Michael.
Michael Van Canneyt wrote 8 lines
in fpc it's a dot.
Try
%.4d
This is in the docs:
http://www.freepascal.org/docs-html/rtl/sysutils/format.html
Thanks, that works.
I did read that page, but only saw 'padded with spaces' and assumed Precision was only applicable to floating point values, as it's "after the dot".
Micha
RTFM. :-) SysUtils.Format ('%.4D', Some_Int); Vinzent.
Vinzent Hoefler wrote 7 lines
On Tuesday 20 June 2006 10:44, Micha Nelissen wrote:
> How can I zero-pad using Format ?
RTFM. :-)
SysUtils.Format ('%.4D', Some_Int);
Sounds like I found a case where 'C' is more intuitive than pascal ;-).
Seriously, isn't "Format" an imitation of C's printf ? At least they are very similar, but on this detail (and maybe some others as well) they are different.
Micha
Micha Nelissen wrote 10 lines
Vinzent Hoefler wrote:
> On Tuesday 20 June 2006 10:44, Micha Nelissen wrote:
>> How can I zero-pad using Format ?
>
> RTFM. :-)
>
> SysUtils.Format ('%.4D', Some_Int);
Sounds like I found a case where 'C' is more intuitive than pascal
;-).
As if format strings were intuitive at all. :-)
I'd call "Zero_Pad (Some_Int, 4)" definitely more intuitive.
Seriously, isn't "Format" an imitation of C's printf ?
Apart from the fact, that you can get run time type checking? Yeah, I suppose so.
At least they are very similar, but on this detail (and maybe some others as well) they are different.
Well, let's assume it's due to Delphi-compatibility. Probably Borland decided to do it differently just for the fun of it. ;-)
Vinzent.
Sounds like I found a case where 'C' is more intuitive than pascal ;-). Seriously, isn't…
> > SysUtils.Format ('%.4D', Some_Int); Sounds like I found a case where 'C' is more intuitive than pascal ;-).
With a C mindset, yes. There a leading 0 can have meaning. In Pascal an extra leading zero never has meaning.
Seriously, isn't "Format" an imitation of C's printf ? At least they are very similar, but on this detail (and maybe some others as well) they are different.
Yeah. Ah well, maybe in C07 that will be fixed.
Marco van de Voort wrote 5 lines
>> SysUtils.Format ('%.4D', Some_Int);
> Sounds like I found a case where 'C' is more intuitive than pascal ;-).
With a C mindset, yes. There a leading 0 can have meaning. In Pascal an
extra leading zero never has meaning.
It's a formatting string, not a number only. You think a digit *after* the decimal point to be used for integers in front of the whole number is more intuitive ?
Micha
Show quoted text 10 lines
Marco van de Voort wrote:
>>> SysUtils.Format ('%.4D', Some_Int);
>> Sounds like I found a case where 'C' is more intuitive than pascal ;-).
>
> With a C mindset, yes. There a leading 0 can have meaning. In Pascal an
> extra leading zero never has meaning.
It's a formatting string, not a number only. You think a digit *after*
the decimal point to be used for integers in front of the whole number
is more intuitive ?
Perfect? no. Better than leading 0? yes.
Leading zeroes that have meaning are an artificial construct. Keep in mind that C users might be aware of deviant use (they are octal numbers as literals), but Pascal users most probably wouldn't think twice.