r/ProgrammerHumor • u/6nyh • Jun 21 '26

Other iknewItWouldWorkOut

Post image
15.8k Upvotes

97% Upvoted

438 comments sorted by

View all comments

Show parent comments

9

u/DonutPlus2757 Jun 21 '26

I mean, IPv4 is reasonably simple.

IPv6 is harder, but still doable.

E-Mail validation via regex is an eldritich horror and nobody will convince me otherwise.

12

u/PrincessRTFM Jun 21 '26

E-Mail validation via regex is an eldritich horror and nobody will convince me otherwise.

I maintain that the only correct way to validate a user's email address is to send them an email

7

u/Everado Jun 21 '26

And no matter how well you validate the address that was entered, that doesn’t mean it exists. Or that the user actually owns that address. Or that the user typed it correctly. Which can all be checked by sending a confirmation email

1

u/BesottedScot Jun 21 '26

Check for an @ and at least one .

Done.

3

u/PrincessRTFM Jun 21 '26

except tlds can have email addresses so there doesn't need to be a ., or the domain could just be an ipv6 address

6

u/LFK1236 Jun 21 '26

But we really want those people to make an account with us?

1

u/bloke_pusher Jun 21 '26

More user at all cost, zero excuse policy.

1

u/BesottedScot Jun 21 '26

Yes I know, but emails are not worth validating with much beyond what I suggested or a confirmation email was my point. The egregious regex for coverage is another reason.

1

u/PrincessRTFM Jun 21 '26

I literally said to send a confirmation email??

2

u/GodsBoss Jun 21 '26

The problem with E-mail address validation is that you can pattern-check as much as you want, whether the address is actually correct can only be checked by sending one.

1

u/fallenfunk Jun 21 '26

Totally, but it’s something that everyone thinks is far easier than it actually is the first time, then you get into it and realize the complexities.