Surely "1337" is the same as 1337, right?

bleistift2@sopuli.xyz · 5 months ago

Surely "1337" is the same as 1337, right?

Doc Avid Mornington@midwest.social · 5 months ago

It’s been a long time, but I’m pretty sure C treats a leading zero as octal in source code. PHP and Node definitely do. Yes, it’s a bad convention. It’s much worse if that’s being done by a runtime function that parses user input, though. I’m pretty sure I’ve seen that somewhere in the past, but no idea where. Doesn’t seem likely to be common.

bleistift2@sopuli.xyz · 5 months ago

PHP and Node definitely do.

Node doesn’t.

> parseInt('077')
77

If the input string, with leading whitespace and possible +/- signs removed, begins with 0x or 0X (a zero, followed by lowercase or uppercase X), radix is assumed to be 16 and the rest of the string is parsed as a hexadecimal number.

If the input string begins with any other value, the radix is 10 (decimal).

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt

Doc Avid Mornington@midwest.social · 5 months ago

You seem to have missed the important phrase “in source code”, as well as the entire second part of my comment discussing that runtime functions that parse user input are different.