Hi all,
i have an array contains no of elements. i want to concatinate 91 before
every elemnt of array. example
i have
A= [234,456,raju] like this
i want the out put arry tobe A=[91234,91456,91raju] like thissss
i want to add 91 before every element
how to do this
--
Posted via http://www.ruby-forum.com/.
the assignment of the variable should look more like this:
On Wed, Mar 24, 2010 at 10:27 PM, Rajkumar Surabhi <mailtorajuit@gmail.com>wrote:
Hi all,
i have an array contains no of elements. i want to concatinate 91 before
every elemnt of array. examplei have
A= [234,456,raju] like this
i want the out put arry tobe A=[91234,91456,91raju] like thissssi want to add 91 before every element
how to do this
--
Posted via http://www.ruby-forum.com/\.
-------------------------------------------------------------
a = ["234","456","raju"]
-------------------------------------------------------------
because otherwise raju is a variable, which wouldn't allow you to append 91
to the beginning of it.
Try this then:
--------------------------------------------------------
array.collect! do |element|
"91" + element.to_s
end
--------------------------------------------------------
Mario
And the short form
a = ["123", "456", "raju"]
a.map!{|x|"91#{x}"} # => ["91123", "91456", "91raju"]
--
Posted via http://www.ruby-forum.com/\.
Even shorter (6 chars if I'm not mistaken):
a = %w{123 456 raju}
a.map!{|x|"91#{x}"}
Kind regards
robert
2010/3/25 Brandon Jones <brandon.g.jones@gmail.com>:
And the short form
a = ["123", "456", "raju"]
a.map!{|x|"91#{x}"} # => ["91123", "91456", "91raju"]
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
Robert Klemme wrote:
Even shorter (6 chars if I'm not mistaken):
a = %w{123 456 raju}
a.map!{|x|"91#{x}"}
Kind regards
robert
oh yeah?!? well take this
%w(123 456 raju).map{|x|"91#{x}"}
not exactly the same, as there is no persistent variable, but it is a
bit shorter
--
Posted via http://www.ruby-forum.com/\.
You're absolutely right. My main point - which I failed to mention -
was, that arrays of strings can be easier represented with the %w
notation. This works of course only if strings need not contain white
space.
Kind regards
robert
2010/3/25 Brandon Jones <brandon.g.jones@gmail.com>:
Robert Klemme wrote:
Even shorter (6 chars if I'm not mistaken):
a = %w{123 456 raju}
a.map!{|x|"91#{x}"}
Kind regards
robert
oh yeah?!? well take this
%w(123 456 raju).map{|x|"91#{x}"}
not exactly the same, as there is no persistent variable, but it is a
bit shorter
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
I think %w would be more syntactically meaningful than curly
braces, square brackets remind us of
arrays. I think it is especially important when using shortcuts, which can
be obscure, to be as clear as possible.
On Thu, Mar 25, 2010 at 11:17 PM, Robert Klemme <shortcutter@googlemail.com>wrote:
2010/3/25 Brandon Jones <brandon.g.jones@gmail.com>:
> Robert Klemme wrote:
>> Even shorter (6 chars if I'm not mistaken):
>>
>> a = %w{123 456 raju}
>> a.map!{|x|"91#{x}"}
>>
>>
>>
>> Kind regards
>>
>> robert
>
> oh yeah?!? well take this
>
> %w(123 456 raju).map{|x|"91#{x}"}
>
> not exactly the same, as there is no persistent variable, but it is a
> bit shorterYou're absolutely right. My main point - which I failed to mention -
was, that arrays of strings can be easier represented with the %w
notation. This works of course only if strings need not contain white
space.Kind regards
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
--
jbw