As a language, Ruby prioritizes programmer productivity over program optimization. This means that Ruby may not always run a program in the fastest way possible, but it strives to be a language tha...

You've seen the Ruby [...] statement before: [...] If the "do something" is a short, simple expression, however, we can move it up into a single line (as you saw in the last exercise). The synt...

You can do the exact same thing with the [...] statement. The order is the same as before: something for Ruby to do, the [...] keyword, and then an expression that evaluates to [...] or [......

During your Ruby adventures, you've seen that you often have many options when it comes to accomplishing any one goal. The [...] statement is no exception! An even more concise version of [...]...

The [...] / [...] statement is powerful, but we can get bogged down in [...] s and [...] s if we have a lot of conditions to check. Thankfully, Ruby provides us with a concise alternative: the ...

We've seen that we can use the [...] operator to assign a value to a variable. But what if we only want to assign a variable if it hasn't already been assigned? For this, we can use the conditi...

Now it's your turn!

We know that methods in Ruby can return values, and we ask a method to [...] a value when we want to use it in another part of our program. What if we don't put a [...] statement in our method ...

Recall that we have the boolean operators and ( [...] ) and or ( [...] ) in Ruby. The [...] operator only returns [...] when the expressions on both sides of the operator are true; [...

Sooner or later, you're going to need to perform a repetitive task in your programs. Many programming languages allow you to do this with a [...] loop, and while Ruby does include [...] loops, ...

If we know the range of numbers we'd like to include, we can use [...] and [...] . This is a much more Rubyist solution than trying to use a [...] loop that stops when a counter variable hits ...

Remember when we mentioned that symbols are awesome for referencing method names? Well, [...] takes a symbol and returns [...] if an object can receive that method and [...] otherwise. For ...

Speaking of pushing to arrays, Ruby has some nice shortcuts for common method names. As luck would have it, one is for [...] ! Instead of typing out the [...] method name, you can simply use [...

You can always use plain old [...] or [...] to add a variable value into a string: [...] But if you want to do it for non-string values, you have to use [...] to make it a string: [...]...

All right! Time to put your new knowledge to work by refactoring some existing code. Refactoring is just a fancy way of saying we're improving the structure or appearance of our code without ch...

Good! Let's make our code even more streamlined using the ternary operator. [...] The example above is just a syntax reminder.

Excellent. Regular [...] / [...] statements aren't the only ones we can refactor, though—a chain of [...] / [...] / [...] statements can clean up really nicely, too!

Perfect! Now let's review conditional assignment. We'll take a break from strict editing mode and let you do a bit more writing.

Next up: let's simplify our method madness by removing unnecessary [...] s from our code.

All right! Last one: let's do something about the decidedly un-Ruby [...] loop in the editor. [...]