Ruby Language Arrays Cast to Array from any object
Example
To get Array from any object, use Kernel#Array.
The following is an example:
Array('something') #=> ["something"]
Array([2, 1, 5]) #=> [2, 1, 5]
Array(1) #=> [1]
Array(2..4) #=> [2, 3, 4]
Array([]) #=> []
Array(nil) #=> []
For example, you could replace join_as_string method from the following code
def join_as_string(arg)
if arg.instance_of?(Array)
arg.join(',')
elsif arg.instance_of?(Range)
arg.to_a.join(',')
else
arg.to_s
end
end
join_as_string('something') #=> "something"
join_as_string([2, 1, 5]) #=> "2,1,5"
join_as_string(1) #=> "1"
join_as_string(2..4) #=> "2,3,4"
join_as_string([]) #=> ""
join_as_string(nil) #=> ""
to the following code.
def join_as_string(arg)
Array(arg).join(',')
end
