[fpc-pascal] Format(), leading zeros, and hex digits

[Mark Morgan Lloyd]

Michael Van Canneyt wrote:
> On Sat, 22 Feb 2014, Mark Morgan Lloyd wrote:
> 
>> Is it possible to get Format() to pad with leading zeros rather than 
>> spaces, particularly in the case of hex numbers? My understanding is 
>> that printf() interprets e.g. %02s as being padded with zeros.
> 
> For string arguments, this is not possible.

My mistake, I meant %02x.

> You can use %.2d for this, or %.2x for hex numbers:
> 
> araminta: >./tf
> 000F
> araminta: >cat tf.pp
> uses sysutils;
> 
> begin
>   writeln(format('%.4x',[15]));
> end.

Thanks, I now see that is described in the example at 
http://lazarus-ccr.sourceforge.net/docs/rtl/sysutils/format.html but not 
in the preceding formal documentation.

Reminder noted with thanks.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

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