[#390749] Why are there so many similar/identical methods in core classes — Kassym Dorsel <k.dorsel@...>

Let's look at the Array class and start with method aliases.

14 messages 2011/12/02

[#390755] Inverse Operation of Module#include — Su Zhang <su.comp.lang.ruby@...>

Hi list,

21 messages 2011/12/02
[#390759] Re: Inverse Operation of Module#include — Ryan Davis <ryand-ruby@...> 2011/12/02

[#390764] Re: Inverse Operation of Module#include — Isaac Sanders <isaacbfsanders@...> 2011/12/02

I would suggest an Adapter pattern use here. IF there is something that has

[#390876] black magical hash element vivification — Chad Perrin <code@...>

Ruby (1.9.3p0 to be precise, installed with RVM) is not behaving as I

12 messages 2011/12/05

[#390918] WEB SURVEY about Ruby Community — Intransition <transfire@...>

Did any one else get this survey request?

14 messages 2011/12/07

[#390976] Confusing results from string multiplication — Rob Marshall <robmarshall@...>

Hi,

19 messages 2011/12/08

[#391019] How can I do h["foo"] += "bar" if h["foo"] does not exist? — "Andrew S." <andrewinfosec@...>

Hi there,

13 messages 2011/12/09

[#391027] reading from file without end-of-lines — Janko Muzykant <umrzykus@...>

hi,

20 messages 2011/12/09
[#391028] Re: reading from file without end-of-lines — Gavin Sinclair <gsinclair@...> 2011/12/09

> i'm trying to read a few text values from single file:

[#391031] Re: reading from file without end-of-lines — Robert Klemme <shortcutter@...> 2011/12/09

On Fri, Dec 9, 2011 at 9:58 AM, Gavin Sinclair <gsinclair@gmail.com> wrote:

[#391042] Re: reading from file without end-of-lines — Gavin Sinclair <gsinclair@...> 2011/12/09

On Fri, Dec 9, 2011 at 8:18 PM, Robert Klemme

[#391135] I need advice on what to do next. — Nathan Kossaeth <system_freak_2004@...>

I am new to programming. I read the ebook "Learn to Program" by Chris

23 messages 2011/12/12

[#391216] perf optimization using profile results — Chuck Remes <cremes.devlist@...>

I need some help with optimizing a set of libraries that I use. They are ffi-rzmq, zmqmachine and rzmq_brokers (all up on github).

13 messages 2011/12/13
[#391218] Re: perf optimization using profile results — Chuck Remes <cremes.devlist@...> 2011/12/13

On Dec 13, 2011, at 9:57 AM, Chuck Remes wrote:

[#391234] Re: perf optimization using profile results — Charles Oliver Nutter <headius@...> 2011/12/14

A couple quick observations.

[#391238] Re: perf optimization using profile results — Chuck Remes <cremes.devlist@...> 2011/12/14

On Dec 13, 2011, at 7:03 PM, Charles Oliver Nutter wrote:

[#391324] ruby 1.9 threading performance goes non-linear — Joel VanderWerf <joelvanderwerf@...>

12 messages 2011/12/16
[#391325] Re: ruby 1.9 threading performance goes non-linear — Eric Wong <normalperson@...> 2011/12/16

Joel VanderWerf <joelvanderwerf@gmail.com> wrote:

[#391420] Accessing class instance variables from an instance? — "Shareef J." <shareef@...>

Hi there,

26 messages 2011/12/20
[#391454] Re: Accessing class instance variables from an instance? — Khat Harr <myphatproxy@...> 2011/12/21

Actually, now that I'm thinking about it the existing behavior sort of

[#391456] Re: Accessing class instance variables from an instance? — Josh Cheek <josh.cheek@...> 2011/12/21

On Tue, Dec 20, 2011 at 9:42 PM, Khat Harr <myphatproxy@hotmail.com> wrote:

[#391545] Kernel#exit raises an exception? — Khat Harr <myphatproxy@...>

While I was working on embedding an interpreter I wrote a function to

13 messages 2011/12/24

[#391618] rvmsh: An easy installer for RVM — Bryan Dunsmore <dunsmoreb@...>

I have recently begun work on a project called [rvmsh]

12 messages 2011/12/29

[#391783] Mailspam — Gunther Diemant <g.diemant@...>

Is there a way to stop this mailspam of Luca (Mail)?

12 messages 2011/12/29

[#391790] What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...>

Hi!

23 messages 2011/12/29
[#391792] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Gunther Diemant <g.diemant@...> 2011/12/29

I think you can't access instance variables from a class method, so

[#391793] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...> 2011/12/29

On Thu, Dec 29, 2011 at 15:52, Gunther Diemant <g.diemant@gmx.net> wrote:

[#391811] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Robert Klemme <shortcutter@...> 2011/12/29

On Thu, Dec 29, 2011 at 4:06 PM, Nikolai Weibull <now@bitwi.se> wrote:

[#391812] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Nikolai Weibull <now@...> 2011/12/29

On Fri, Dec 30, 2011 at 00:26, Robert Klemme <shortcutter@googlemail.com> w=

[#391816] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Josh Cheek <josh.cheek@...> 2011/12/30

On Thu, Dec 29, 2011 at 5:47 PM, Nikolai Weibull <now@bitwi.se> wrote:

[#391833] Re: What’s the standard way of implementing #hash for value objects in Ruby? — Robert Klemme <shortcutter@...> 2011/12/30

On Fri, Dec 30, 2011 at 12:47 AM, Nikolai Weibull <now@bitwi.se> wrote:

Re: round float to integer if whole number

From: frosty <frosty@...>
Date: 2011-12-15 23:14:39 UTC
List: ruby-talk #391294
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 12/15/2011 05:21 AM, Gunther Diemant wrote:
>> That test does not work reliably:
> You're right, but floating point numbers don't work reliably (as
> one can see in your examples, one has always conversion and
> rounding errors)
> 
> Nonetheless if one has to work with floating point numbers it is
> surly better to define equality in terms of some delta error
> tolerance.
> 
I would think the most accurate way to do it would be to convert the
number to a string, split on the '.' and then check if a number
besides '0' is in the second part of the list. For example

irb(main):001:0> whole, nonwhole = 2.0 , 2.333
=> [2.0, 2.333]
irb(main):002:0> puts whole.class()
Float
=> nil
irb(main):003:0> puts nonwhole.class()
Float
=> nil
irb(main):004:0> whole_split = whole.to_s.split('.')[1]
=> "0"
irb(main):005:0> nonwhole_split = nonwhole.to_s.split('.')[1]
=> "333"
irb(main):006:0> /[1-9]/.match(whole_split)
=> nil
irb(main):007:0> /[1-9]/.match(nonwhole_split)
=> #<MatchData "3">

- -- 
frosty
public key: unluckyfrosty.net/public_key
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