Question

a,b=1,2
=>[1,2]
a,b=[1,2]
=>[1,2]

i newbie on ruby,i have alchknowlege of python in python there also have this feature

what dose this feaure called in ruby,and also i have one thing confused

why after given the value to the a,b varient,the output a array?

Answer 1

Both are same, try this in IRB:

a,b=1,2
a.kind_of? Integer --> True
b.kind_of? Integer --> True
a.kind_of? Array --> False
b.kind_of? Array --> False
puts a --> 1
puts b --> 2

a,b=[1,2]
a.kind_of? Integer --> True
b.kind_of? Integer --> True
a.kind_of? Array --> False
b.kind_of? Array --> False
puts a --> 1
puts b --> 2

Ruby docs is your best friend + IRB ofcourse. There are many good tutorials out there, choose one which suits you.