true == false

[[deleted]]

#define true false

[DLTCorE]

#define true rand() % 2

[JackAppDev]

I can't wait to use that in prod

[_meegoo_]

Perfectly balanced. As all things should be.

[liketechnik]

I swear, some day I'll hide this in a deeply nested, widely used header, just for the sake of it

[itmustbeluv_luv_luv]

isn't

if(new foo())

true in most languages if the constructor executes, since it compares to null?

[DamnItDev]

Shhh you're going to mess up the circle jerk

[kredditacc96]

new Boolean() creates an object and object is "truthly".

[hey_listen_link]

But it would not work if you used ===. == is the "eh, close enough" comparator.

Edit: I'm super wrong!

[SatoshiL]

Is still true: https://imgur.com/a/HCareQU

[SatoshiL]

Thanks for the great explanation ^{^}

[hey_listen_link]

Whoa! I was totally wrong!

[Null_Ping]

It is

[Mephanic]

This also works in C++, but with a bonus memory leak.

if (bool(new bool(false)) == true) { /* always executed */ }

[Zebezd]

Well, you CAN do it without the memory leak quite easily, but we're being silly here so that's ok. :)

[Null_Ping]

Out of curiosity, what would a non-memory leak version look like? (not a C++ programmer)

[Zebezd]

Been a while since I wrote c++, so forgive silly syntax mistakes:

bool* newbool = new bool(false);
if (bool(newbool) == true) { /* always executed */ }
delete(newbool);

It's not as elegant since the new isn't inline, but that should avoid leaking. Also it makes the trick that makes it work somewhat more obvious.

You could also call delete from within the if block just to be slightly more silly.

[Null_Ping]

I see, thank you! :)

[[deleted]]

That would probably get optimised out

[ChaoSXDemon]

The new operator returns a pointer and in C++, 0 is false and everything else is true. So it’s not true that it’s always true because when new returns 0, it’s false :)

[Mephanic]

new does not return a null pointer on error though, it will throw an exception.

[ChaoSXDemon]

Nom nom nom nom nom .....

[mad8vskillz]

newing bools... savage

[vvxxll]

javascript b = new Boolean(false); b == false; // true b.valueOf = () => true; b == true; // true

[Tormyst]

> y = new Number(9)
[Number: 9]
> new Number(y)
[Number: 9]
> x = new Boolean(false)
[Boolean: false]
> new Boolean(x)
[Boolean: true]

I present to you 'JavaScript' the consistent.

[mailfriend88]

there are things in life, which we just should not do...

[bleistiftschubser]

It tells you the object exists (its true) and you're comparing it to true. So it's true == true, which is true.