Negative Numbers

ruby-talk
1

Hey all,

I'm just getting started with Ruby and was wondering if there is a way
to translate negative numbers into their positive equals. i.e turning
-7 into 7. Thanks for any help.

···

--
Posted via http://www.ruby-forum.com/.

2

Marston A. wrote:

Hey all,

I'm just getting started with Ruby and was wondering if there is a way to translate negative numbers into their positive equals. i.e turning -7 into 7. Thanks for any help.

irb(main):001:0> -7.abs
=> 7

-Justin

3

-12345.abs

Look at this: http://www.ruby-doc.org/core/classes/Fixnum.html

Marston A. schrieb:

···

Hey all,

I'm just getting started with Ruby and was wondering if there is a way
to translate negative numbers into their positive equals. i.e turning
-7 into 7. Thanks for any help.

--
Posted via http://www.ruby-forum.com/\.

4

Or if you want to flip the sign, just prepend a '-':

irb(main):001:0> --7
=> 7

-Mat

···

On Jul 13, 2006, at 12:19 PM, Marston A. wrote:

Hey all,

I'm just getting started with Ruby and was wondering if there is a way
to translate negative numbers into their positive equals. i.e turning
-7 into 7. Thanks for any help.

5

You can always multiply it by negative one (-1), e.g.

irb(main):001:0> a = -7
=> -7
irb(main):002:0> a *= -1
=> 7
irb(main):003:0> a
=> 7

···

----- Original Message ----- From: "Mat Schaffer" <schapht@gmail.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Thursday, July 13, 2006 12:32 PM
Subject: Re: Negative Numbers

On Jul 13, 2006, at 12:19 PM, Marston A. wrote:

Hey all,

I'm just getting started with Ruby and was wondering if there is a way
to translate negative numbers into their positive equals. i.e turning
-7 into 7. Thanks for any help.

Or if you want to flip the sign, just prepend a '-':

irb(main):001:0> --7
=> 7

-Mat

6

Hi,

just another comment:

Marston A. wrote:
>I'm just getting started with Ruby and was wondering if there is a way
>to translate negative numbers into their positive equals. i.e turning
>-7 into 7. Thanks for any help.

irb(main):001:0> -7.abs
=> 7

Be careful. The minus sign is part of the constant. A minus
prepended to a variable takes precedence over the `abs'
function call:

  irb(main):001:0> -7.abs
  => 7
  irb(main):002:0> a=7 ; -a.abs
  => -7

Bertram

···

Am Freitag, 14. Jul 2006, 01:22:56 +0900 schrieb Justin Collins:

--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de

7

You can also call the abs method of a number to get its absolute
value, which will be positive.

--Scott

···

On 7/13/06, Craig Kim <cjkim@jcnow.com> wrote:

You can always multiply it by negative one (-1), e.g.

irb(main):001:0> a = -7
=> -7
irb(main):002:0> a *= -1
=> 7
irb(main):003:0> a
=> 7

----- Original Message -----
From: "Mat Schaffer" <schapht@gmail.com>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Thursday, July 13, 2006 12:32 PM
Subject: Re: Negative Numbers

> On Jul 13, 2006, at 12:19 PM, Marston A. wrote:
>> Hey all,
>>
>> I'm just getting started with Ruby and was wondering if there is a way
>> to translate negative numbers into their positive equals. i.e turning
>> -7 into 7. Thanks for any help.
>
> Or if you want to flip the sign, just prepend a '-':
>
> irb(main):001:0> --7
> => 7
>
> -Mat
>

--

--Scott

8

Hey everyone,

Great, this is exactly what I need. Thanks for the info.

···

--
Posted via http://www.ruby-forum.com/.