Just another QR code library

[Andrea Fontana]

On Saturday, 8 February 2025 at 06:11:59 UTC, confuzzled wrote:
> On 10/18/24 7:57 PM, Andrea Fontana wrote:
>> On Wednesday, 16 October 2024 at 12:58:29 UTC, Andrea Fontana 
>> wrote:
>>> Hey everyone,
>>>
>>> I've been working on a small project lately and thought I'd 
>>> share it with you all. It's a simple QR code generation 
>>> library. It is based on Project Nayuki's library.
>> 
>> I have released a small update with some improvements:
>> 
>> - Added SVGZ format (still with no external dependencies!)
>> - PNG files now use an indexed color palette and maximum 
>> compression
>> - Deprecated save() in favor of saveAs()
>> 
>> Now, a QRCode sized 2500x2500px (!) takes ~3.5KB as a PNG or 
>> ~750 bytes as an SVGZ.
>> 
>> Andrea Fontana
>> 
>> 
>
> I'm trying to create a vCard to store contact details that will 
> automatically save to a smartphone's contact list, but I'm 
> having trouble. Could you provide an example of a vCard that 
> does this?

```
import std.stdio;
import qr;

immutable vcard =
`BEGIN:VCARD
VERSION:4.0
FN:Simon Perreault
N:Perreault;Simon;;;ing. jr,M.Sc.
BDAY:--0203
GENDER:M
EMAIL;TYPE=work:simon.perreault at viagenie.ca
END:VCARD`;

void main()
{
    QrCode(vcard).save("vcard.png");
}
```

You just need to create a qr with a vcard string. More info: 
https://en.wikipedia.org/wiki/VCard

Andrea