Nicer way to convert array of int to array of string

ruby-talk
1

Hi,

I'm quite new in Ruby. Here is what I wrote to convert array of
integer to array of string. I'm sure there is more compact and nicer
way to do this. Can I see the "ruby" way here ?

def convert(intArray)
  stringArray = []
  intArray.each do |i|
    stringArray = stringArray + i.to_s.to_a
  end
  return stringArray
end

Thanks,

···

--
-Nick Kanakakorn

2

Alle venerdì 9 febbraio 2007, S Kanakakorn ha scritto:

Hi,

I'm quite new in Ruby. Here is what I wrote to convert array of
integer to array of string. I'm sure there is more compact and nicer
way to do this. Can I see the "ruby" way here ?

def convert(intArray)
  stringArray =
  intArray.each do |i|
    stringArray = stringArray + i.to_s.to_a
  end
  return stringArray
end

Thanks,

stringArray=intArray.map{|i| i.to_s}

map passes each value of the array to the block and puts what the block
returns in a array.

Stefano

3

[1, 2, 3, 4].map{|i| i.to_s } #=> ["1", "2", "3", "4"]

#map calls the given block sequentially with each item in the array, and
returns an array containing the values returned by those calls.

Cheers,
Daniel Schierbeck

···

On Sat, 2007-02-10 at 05:02 +0900, S Kanakakorn wrote:

Hi,

I'm quite new in Ruby. Here is what I wrote to convert array of
integer to array of string. I'm sure there is more compact and nicer
way to do this. Can I see the "ruby" way here ?

def convert(intArray)
  stringArray =
  intArray.each do |i|
    stringArray = stringArray + i.to_s.to_a
  end
  return stringArray
end

4

If you use Ruby on Rails or Ruby 1.9 you'll also be able to do this:
intArray.map(&:to_s)

···

On Feb 9, 9:05 pm, Stefano Crocco <stefano.cro...@alice.it> wrote:

Alle venerdì 9 febbraio 2007, S Kanakakorn ha scritto:

> Hi,

> I'm quite new in Ruby. Here is what I wrote to convert array of
> integer to array of string. I'm sure there is more compact and nicer
> way to do this. Can I see the "ruby" way here ?

> def convert(intArray)
> stringArray =
> intArray.each do |i|
> stringArray = stringArray + i.to_s.to_a
> end
> return stringArray
> end

> Thanks,

stringArray=intArray.map{|i| i.to_s}

map passes each value of the array to the block and puts what the block
returns in a array.

Stefano