FAQ: Control Flow in Ruby - Equal or Not?


This community-built FAQ covers the “Equal or Not?” exercise from the lesson “Control Flow in Ruby”.

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This exercise can be found in the following Codecademy content:

Learn Ruby

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I put "is_true = 2 != 3

is_false = 2 == 3

and got the error message “(ruby):3: syntax error, unexpected keyword_end, expecting end-of-input”

I don’t understand why. Unless I’ve been sucked into an alternate dimension, 2 is indeed not equal to 3.


I know, this one is tricking me as well, and it does not offer what the solution is…


Let’s look at the example given in the narration text…

x = 2
y = 2
if x == y
  print "x and y are equal!"

In Ruby, block structures have a beginning (a keyword and expression), a block (the statement within) and an end. That is standard syntax.

Two statements inline do not represent a block structure, so would never be followed by end.

is_true = 2 != 3
is_false = 2 == 3

If we follow this with end we do indeed get the error given in the previous post.