Re: what does *my_array do?
Hi --
On Sat, 1 Oct 2005, Shea Martin wrote:
using tk in ruby, when I add my_array to a listbox it adds all the items as a
single large string. when I add them as *my_array it puts them in correctly.
I got *my_array from a example on web, but I don't know what it means.
It "un-arrays" the array, turning it back into a plain list of
objects. For example:
a = [3,4,5]
b = [1,2,*a] # [1,2,3,4,5]
as opposed to:
b = [1,2,a] # [1,2,[3,4,5]]
It also plays a role in method calls. This:
def x(*args)
is a method that can take any number of arguments (including zero),
and will store them in the array args.
David
--
David A. Black
dblack@xxxxxxxxxxxx
.
