550
0 vs null vs undefined - explained with toilet paper (i.stack.imgur.com)
submitted 1 year ago by jeff@programming.dev to c/programmer_humor@programming.dev
33 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[-] ipkpjersi@lemmy.one 3 points 1 year ago

Depends on the programming language. In JavaScript, it literally means that like the key or variable does not actually exist. Whereas like in C/C++, writing random bytes to random memory addresses would result in "undefined behaviour" which means basically anything could happen.

[-] crystal@feddit.de 2 points 1 year ago* (last edited 1 year ago)

In Javascript you can do let a = undefined, defining the variale a as undefined.

A significant difference to defining it as null is that typeof null == "object", while typeof undefined == "undefined".

this post was submitted on 06 Jul 2023
550 points (97.6% liked)

Programmer Humor

19623 readers
1 users here now

Welcome to Programmer Humor!

This is a place where you can post jokes, memes, humor, etc. related to programming!

For sharing awful code theres also Programming Horror.

Rules

founded 1 year ago
MODERATORS
Feyter@programming.dev
anzo@programming.dev
BurningTurtle@programming.dev
pylapp@programming.dev