Topic: To get a neg number

[TimSpangler]

I seem to be having a brain fart.  I want to turn a number negative  How do I do it??

[Matt__W]

I seem to be having a brain fart.  I want to turn a number negative  How do I do it??

Besides adding the little minus (-) sign in front of it??

[MP]

I wanna know where the big minus sign is.

[ronjonp]

(if (minusp n)n (* -1 n)) ?

[MP]

Psst, Ron, try it:

(- 42)

[TimSpangler]

Psst, Ron, try it:

(- 42)

Damn, right in front of my face.

Forest meet trees, Trees meet forest........

Thanks MP

[MP]

Matt called it, I just put light on it.

[TimSpangler]

.......and thanks to Matt........

Have you guys met forest and trees?   

[MP]

Dude I live in a van down by the river.

[TimSpangler]

So you've seen the trees many times, the world is you bathroom? 

[MP]

Well if I were you I'd avoid that tree over there yonder.

[ronjonp]

Psst, Ron, try it:

(- 42)

Cool  ....there is so much I don't know 

[TimSpangler]

Treading very lightly......Thanks for the heads up

[TimSpangler]

Psst, Ron, try it:

(- 42)

Cool  ....there is so much I don't know 

Yeah, the more you know, the more you know you don't know......  :ugly:

[MP]

there is so much I don't know 

[ronjonp]

there is so much I don't know 

[CAB]

Anyone want a guarantee?

Code: [Select]

(-(abs num))

[David Bethel]

Or:

Code: [Select]

(min n (- n))

[Daniel J. Ellis]

Yeah, the more you know, the more you know you don't know......  :ugly:

Funilly enough, I remember Donald Rumsfeld being mocked for making the same point:

There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
Donald Rumsfeld