Arrays

[Rajkumar Surabhi]

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

 

[Mario Antonetti]

[Note: parts of this message were removed to make it a legal post.]

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

the assignment of the variable should look more like this:

 

[Brandon Jones]

And the short form

a = ["123", "456", "raju"]
a.map!{|x|"91#{x}"} # => ["91123", "91456", "91raju"]

 

[Robert Klemme]

And the short form

a = ["123", "456", "raju"]
a.map!{|x|"91#{x}"} # => ["91123", "91456", "91raju"]

Even shorter (6 chars if I'm not mistaken):

a = %w{123 456 raju}
a.map!{|x|"91#{x}"}

;-)

Kind regards

robert

 

[Brandon Jones]

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

 

[Robert Klemme]

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

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

 

[jbw]

[Note: parts of this message were removed to make it a legal post.]

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

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.