Ruby If Nil Else

Everything else is truthy.

Ruby if nil else.

Will only return true if the. Executes code if the conditional is true. And even those speaking ruby quite fluently don t usually know the tiny little details. Notice ruby uses elsif not else if nor elif.

Notice that we use two equal symbols to mean equality. Everything else is truthy. In ruby on rails what s the difference actually. One equals sign in ruby means assignment make sure to use when you want to find out if two things are the same.

Def initial response if condition responses to a first else nil end end can be simplified to. You learned that nil is just a ruby object that represents nothing. When you write a boolean expression like. Let s evaluate their usefulness and potential problems that they bring to the table.

With an if statement you can check if something is true. What do they return. Logical boolean operators like and.

Ruby remember your first day of learning ruby when you were told that pretty much everything is an object. That means they return something. But when you want to check for the opposite not true false. There are plenty of options available.

Def initial response if condition responses to a first end end so we can further refactor. Well nil is also its own class. Memoirs of a software team leader read more. If the conditional is not true code specified in the else clause is executed.

If response initial response do something with response else response is equal to nil end. You also learned that nil false are the only two things in ruby that are falsy. Remember also that a ruby method returns nil by default. If you don t this right you won t get the expected results.

September 11 2010 4 minute read tags. If you enjoyed this post don t forget to share it on your favorite social networks.