Seems so simple, but is this really the only way, or most di

Ruby
1

9 digits in a string “123456789”, convert to individual Fixnums
[1,2,3,4,5,6,7,8,9], or as below

a, b, c, d, e, f, g, h, i = id.scan(/\d/).map(&:to_i)

Simpler yet how about [“1”, “2”, …]. Is scan the only direct way?

I tried the “*” mechanism, no such luck, and tried array slicing again
no luck. TIA

2

John P. wrote:

9 digits in a string “123456789”, convert to individual Fixnums

irb(main):001:0> s = “123456789”
=> “123456789”
irb(main):002:0> s.split(’’).map{ |n| n.to_i }
=> [1, 2, 3, 4, 5, 6, 7, 8, 9]

3

id.unpack(‘c’ * id.size).map { |x| x-48 } # without regex and to_i
conversions

Mike D.
http://www.rubywizards.com

4

On 10/18/06, John P. [email protected] wrote:

9 digits in a string “123456789”, convert to individual Fixnums
[1,2,3,4,5,6,7,8,9], or as below

a, b, c, d, e, f, g, h, i = id.scan(/\d/).map(&:to_i)

Simpler yet how about [“1”, “2”, …]. Is scan the only direct way?

“123456789”.split( ‘’ ) #thats two single quotes. (:

hth,
-Harold

5

On 10/18/06, Mike D. [email protected] wrote:

id.unpack(‘c’ * id.size).map { |x| x-48 } # without regex and to_i
conversions

which is great, but if we are golfing let us improve our handicap :wink:
id.unpack(“c*”)…

Robert

–
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all progress
depends on the unreasonable man.

  • George Bernhard Shaw
6

9 digits in a string “123456789”, convert to individual Fixnums
[1,2,3,4,5,6,7,8,9], or as below

a, b, c, d, e, f, g, h, i = id.scan(/\d/).map(&:to_i)

Simpler yet how about [“1”, “2”, …]. Is scan the only direct way?

I tried the “*” mechanism, no such luck, and tried array slicing again
no luck. TIA

(1…9).to_a

?

I’m not quite sure what you are trying to do, you see :slight_smile: Are you trying
to actaully set variables? If you are, first I’d ask “why are you trying
to set a range of instance variables”. After that, if you’re sure you do
(and hell, “for fun” is an answer), then I’m sure that there is a method
like instance_variable_set, only for manipulating local variables, but
oddly, I don’t seem able to find it at the moment…

7

“123456789”.split( ‘’ ) #thats two single quotes. (:

But that only gives you nine strings. The question demanded nine
Fixnums, which is the less elegant part.