Can you check if multiple values are the same on the same line in ruby on rails?

Question

Basically, I am trying to check if 6 of my values are the same. I tried stringing them:

if val1 == val2 == val3 == val4 == val5 == val6
  #...
end

But this errors out. Is this possible using another method? Thanks

Answer 1

Try this:

if [val1, val2, val3, val4, val5, val6].uniq.count == 1
  #...
end

If you wanna get fancy, you can try this

unless [val2, val3, val4, val5, val6].find{ |x| x != val1 }
  # ...
end

The above will stop as soon as it finds an element that is not equal to val1, otherwise, the block will be executed.

Answer 2

A cute way:

[val1,val2,val3,valN].uniq.size == 1

A more prosaic way:

[val2,val3,valN].all?{ |x| x == val1 }

Answer 3

If values are by any chance Fixnum, this sexy line would work:

if val1 == val2 & val3 & val4 & val5 & val6
  # ...
end

if not, then this fatty would work for any type

if [val1] == [val2] & [val3] & [val4] & [val5] & [val6]
   # ...
end