How to get one time the ,

ruby-talk
1

Hello,

I have this :

def solution(pairs)
   pairs.each {|key, value| print "#{key} = #{value}" }
end

when I do solution({a: 1, b: '2'}) I see a = 1 b = 2
when I change the pairs to this

pairs.each {|key, value| print "#{key} = #{value}, " }

I will see a = 1, b=2,

is there a way I can take care that after the 2 no , is displayed.

Roelof

2

Array#join will do the trick:

     print pairs.map { |key, value| "#{key} = #{value}" }.join(', ')

if you want a new-line at the end of that, then use `puts` instead of `print`

···

On 06/06/2014 07:12 AM, Roelof Wobben wrote:

Hello,

I have this :

def solution(pairs)
  pairs.each {|key, value| print "#{key} = #{value}" }
end

when I do solution({a: 1, b: '2'}) I see a = 1 b = 2
when I change the pairs to this

pairs.each {|key, value| print "#{key} = #{value}, " }

I will see a = 1, b=2,

is there a way I can take care that after the 2 no , is displayed.

Roelof

3

Try pushing the results into an array and then arr.join(",") perhaps?

···

On 6 June 2014 15:12, Roelof Wobben <r.wobben@home.nl> wrote:

Hello,

I have this :

def solution(pairs)
  pairs.each {|key, value| print "#{key} = #{value}" }
end

when I do solution({a: 1, b: '2'}) I see a = 1 b = 2
when I change the pairs to this

pairs.each {|key, value| print "#{key} = #{value}, " }

I will see a = 1, b=2,

is there a way I can take care that after the 2 no , is displayed.

Roelof

--
== People often come up to me and ask "What the heck are you doing in my
shed!?" ==

4

Thanks,

I just needed to use map instead of each.

Roelof

Wayne Conrad schreef op 6-6-2014 16:25:

···

Array#join will do the trick:

    print pairs.map { |key, value| "#{key} = #{value}" }.join(', ')

if you want a new-line at the end of that, then use `puts` instead of `print`

On 06/06/2014 07:12 AM, Roelof Wobben wrote:

Hello,

I have this :

def solution(pairs)
  pairs.each {|key, value| print "#{key} = #{value}" }
end

when I do solution({a: 1, b: '2'}) I see a = 1 b = 2
when I change the pairs to this

pairs.each {|key, value| print "#{key} = #{value}, " }

I will see a = 1, b=2,

is there a way I can take care that after the 2 no , is displayed.

Roelof

5

unsubscribe

···

On Fri, Jun 6, 2014 at 4:37 PM, Roelof Wobben <r.wobben@home.nl> wrote:

Thanks,

I just needed to use map instead of each.

Roelof

Wayne Conrad schreef op 6-6-2014 16:25:

Array#join will do the trick:

    print pairs.map { |key, value| "#{key} = #{value}" }.join(', ')

if you want a new-line at the end of that, then use `puts` instead of
`print`

On 06/06/2014 07:12 AM, Roelof Wobben wrote:

Hello,

I have this :

def solution(pairs)
  pairs.each {|key, value| print "#{key} = #{value}" }
end

when I do solution({a: 1, b: '2'}) I see a = 1 b = 2
when I change the pairs to this

pairs.each {|key, value| print "#{key} = #{value}, " }

I will see a = 1, b=2,

is there a way I can take care that after the 2 no , is displayed.

Roelof