Two dimention arrays and accessing syslog

Sean_Murphy · January 14, 2008, 9:15am

All,

A newby question, only been using Ruby for about 2 days.

Is there a better way of creating a two dimention array, than the code
used
below

def create_world x, y
row = Array.new

y.times {
|j|
col = Array.new
x.times {
|i|

  map_type = rand(2)
  col[i] = map_type
}
row[j] = col

}

return row
end

world = create_world(gets.to_i, gets.to_i)

Also, what is the best method of accessing the syslog file within Linux?
I
could open the file for reading, but I want to make sure there isn’t a
better method first.

Regards
Sean Murphy
Skype: smurf20005

Life is a challenge, treat it that way.

Sean_Murphy · January 14, 2008, 9:41am

Alle lunedì 14 gennaio 2008, Sean Murphy ha scritto:

y.times {

return row
end

world = create_world(gets.to_i, gets.to_i)

This should work:

def make_2d_array n_row, n_col
Array.new(n_row) do
Array.new(n_col){ rand(2) }
end
end

make_2d_array(gets.to_i, gets.to_i)

The block form of Array.new creates an array of the size passed as
argument,
then calls the block for each index of the array and stores the value
returned by the block in the corresponding element of the array (the
block
can take one parameter, the index of the element, which wasn’t necessary
in
this case). See the ri documentation for Array.new for more information.

I hope this helps

Stefano

Sean_Murphy · January 14, 2008, 10:01am

Hi,

thanks for that, that was really cool code.