[#399938] how to read arrary with an array — "Richard D." <lists@...>

Hello. I believe this is basic question, but I'm just starting to learn

19 messages 2012/10/02

[#400050] img src while sending email ruby cgi — Ferdous ara <lists@...>

Hi

16 messages 2012/10/05

[#400351] Drop 1st and last particular character — ajay paswan <lists@...>

What is the most efficient way to drop '#' from the first place and last

15 messages 2012/10/16

[#400374] database part of a desktop application — "Sebastjan H." <lists@...>

Hi,

14 messages 2012/10/16
[#400375] Re: database part of a desktop application — Chad Perrin <code@...> 2012/10/16

On Wed, Oct 17, 2012 at 05:28:39AM +0900, Sebastjan H. wrote:

[#400377] Re: database part of a desktop application — sto.mar@... 2012/10/17

Am 16.10.2012 23:24, schrieb Chad Perrin:

[#400389] Re: database part of a desktop application — Chad Perrin <code@...> 2012/10/17

On Wed, Oct 17, 2012 at 01:39:21PM +0900, sto.mar@web.de wrote:

[#400386] Unable to send attachment, and dealing with multiple attachment — ajay paswan <lists@...>

Hi,

11 messages 2012/10/17

[#400454] Hash with Integer key issue — Wayne Simmerson <lists@...>

Hi Im new to Ruby and am getting some unexpected results from a

18 messages 2012/10/19

[#400535] Name/symbol/object type clash? What is happening here? — Todd Benson <caduceass@...>

It's nonsense code, but I'm curious as to what is going on behind the scenes...

41 messages 2012/10/23

[#400556] Calling a method foo() or an object foo.method_call_here - both — Marc Heiler <lists@...>

Hello.

13 messages 2012/10/24

[#400650] OpenSSL ECDSA public key from private — Nokan Emiro <uzleepito@...>

Hi,

11 messages 2012/10/27

[#400680] Passing folder as argument ARGV? — Joz Private <lists@...>

Is there an easy way to pass multiple files on the command line?

15 messages 2012/10/28
[#400681] Re: Passing folder as argument ARGV? — brad smith <bradleydsmith@...> 2012/10/28

How are you traversing the directory you pass in on the command line ?

[#400697] File.readable? and /proc — Jeff Moore <lists@...>

root@nail:/projects/proc_fs# uname -a

13 messages 2012/10/28

[#400714] Marshal.load weird issue — "Pierre J." <lists@...>

Hi guys

12 messages 2012/10/28

[#400781] bug?: local variable created in if modifier not available in modified expression — "Mean L." <lists@...>

irb(main):001:0> local1 if local1 = "created"

21 messages 2012/10/30
[#400807] Re: bug?: local variable created in if modifier not available in modified expression — Bartosz Dziewoński <matma.rex@...> 2012/10/31

Oh, and in case it wasn't apparent: you can just add

[#400808] Re: bug?: local variable created in if modifier not available in modified expression — Eliezer Croitoru <eliezer@...> 2012/10/31

On 10/31/2012 4:52 PM, Bartosz Dziewoナгki wrote:

[#400809] Re: bug?: local variable created in if modifier not available in modified expression — Robert Klemme <shortcutter@...> 2012/10/31

On Wed, Oct 31, 2012 at 4:28 PM, Eliezer Croitoru <eliezer@ngtech.co.il>wrote:

[#400784] REXML & HTMLentities incorrectly map to UTF-8 — "Mark S." <lists@...>

I have some XML data (UTF 8) that I'm trying to convert into another XML

13 messages 2012/10/30

Re: Newbie, questions about === expression

From: Stefano Crocco <stefano.crocco@...>
Date: 2012-10-27 14:36:10 UTC
List: ruby-talk #400647
On Saturday 27 October 2012 =E6=9C=88=E5=BF=A7=E8=8C=97 wrote
> Hi,
>=20
> I'm learning ruby this days.
> And I followed this docs:  http://www.ruby-doc.org/docs/ProgrammingRu=
by/
>=20
>=20
> Now, I have some questions about =3D=3D=3D  expression
>=20
>=20
> irb(main):138:0> case 1
> irb(main):139:1> when 1..10 then 'in'
> irb(main):140:1> else 'not in'
> irb(main):141:1> end
>=20
> obviously, the result is 'in'
>=20
> In the docs, there are an explanation:
> *case operates by comparing the target (the expression after the keyw=
ord
> case) with each of the comparison expressions after the when keywords=
. This
> test is done using comparison =3D=3D=3D target. As long as a class de=
fines
> meaningful semantics for =3D=3D=3D (and all the built-in classes do),=
 objects of
> that class can be used in case expressions. *
>=20
>=20
> But,  when I type this,  why throw an error ?
>=20
> irb(main):149:0> 1..10 =3D=3D=3D 1
> ArgumentError: bad value for range
>     from (irb):149
>     from /opt/ruby-1.9.3/bin/irb:12:in `<main>'
>=20
>=20
>=20
> Thanks.

You need to put parentheses around the range:

(1..10) =3D=3D=3D 1

otherwise ruby understands the expression as if it were
1..(10 =3D=3D=3D 1)

that is, as

10..false,

which, of course, is not a valid range.

I hope this helps

Stefano

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