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Creating a QR Code step by step

nayuki.io

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11–20 of 49 posts

Re: Creating a QR Code step by step

#11

Post by slig »

This resource is awesome. I wanted to have the smallest readable QR code for my printables pages footer [1], and I discovered there that it's possible to encode URLs in "Alphanumeric mode", version 1, using only uppercase characters, e.g., HTTPS://FOO.CC/ABCDEFGHIJ, so I got a three letter domain name and built the simplest URL shortener hosted on a CF worker.

[1]: https://pdf.ahaprintables.com/pdf/preview/aha/zebra-puzzles-... (PDF)

Re: Creating a QR Code step by step

#12

Post by ipdashc »

belter wrote: post #2

The feedback he receives is quite fun: https://www.nayuki.io/page/poor-feedback-from-readers

Man, I understand that it can be annoying to get spammy messages, but a few of these are really kind of lame on the blogger's part. The sales mail, advertisement requests, and "want to sell your website" offers, sure, whatever, post and slander 'em. But a chunk of these are just genuine, polite requests for help, even if some (but not all) are sloppy or have bad grammar. There's a few that are asking for an interview or sound like they just want to be friends. There's no obligation to reply, of course, but to post them online just to mock them? That's really kind of sad, and I'm surprised the author is fine with doing it / thinks it casts them in a good light? Put all together, this is one of the most pretentious pages I've ever seen on the Internet.

And then there's "that shameless country", "that needy country", "that unspeakable country", as others have pointed out. ... really? Yeah, we've all gotten spammy emails from Indian senders, joking about it is one thing, but that's just gross.

Re: Creating a QR Code step by step

#13

Post by saagarjha »

belter wrote: post #2

The feedback he receives is quite fun: https://www.nayuki.io/page/poor-feedback-from-readers

Generally, when you get a message from someone that you don’t like, it helps if your complaint does not include casual racism and a critique of the author’s English proficiency.

Re: Creating a QR Code step by step

#14

Post by prab97 »

belter wrote: post #2

The feedback he receives is quite fun: https://www.nayuki.io/page/poor-feedback-from-readers

The commentary mocking people for their poor English, followed by disparaging remarks about an entire country as if the email senders represent a typical sample from that nation, says more about the blog owner than about the email senders themselves.

The blog owner exudes elitist vibes in the commentary. A quick skim of the blog reveals a request for Bitcoin donations, suggesting $3 as the amount, without considering that a large portion of this donation will be eaten up by fees.

Re: Creating a QR Code step by step

#16

Post by greggman24 »

it's nice to have an explanation. for me, I just wanted to quickly make them. Googling led to ad covered sites and "register to use" site. Found a few on GitHub but they had other issues so threw together my own using a well designed library I'd used before. took about 15 minutes

https://greggman.github.io/qr-code/

might add more options but in truth I don't think most users need the options

Re: Creating a QR Code step by step

#17

Post by Timwi »

Unfortunately it seems that every online explanation of QR codes always leaves out the Reed-Solomon error code calculation. The author here describes it as “long, tedious, and not very interesting”, but since everyone seems to think that, it is now very hard to find.

Re: Creating a QR Code step by step

#18

Post by agnishom »

belter wrote: post #2

The feedback he receives is quite fun: https://www.nayuki.io/page/poor-feedback-from-readers

I understand it is annoying to receive spam, and Nayuki is under no obligation to help strangers with their code. However, how about a little empathy for the students whose cultural and education system have not taught them any better?

In some cases, Nayuki is not even happy with people pointing out legit errors in their blog. For example,

> I want to use the parameters [...] and > > invNTT(NTT(invec)) !=invec ?

Re: Creating a QR Code step by step

#19

Post by cammikebrown »

Timwi wrote: post #17

Unfortunately it seems that every online explanation of QR codes always leaves out the Reed-Solomon error code calculation. The author here describes it as “long, tedious, and not very interesting”, but since everyone seems to think that, it is now very hard to find.

There’s a Wikipedia article for it
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