This lab cannot be completed with the information presented. Needs more work.

The test explicitly states that for the method words_starting_with_un_and_ending_with_ing that it returns an array with the words starting with 'un' and ending with 'ing'. That means if a word contains un but doesn't begin with it, it doesn't qualify. As it stands text.scan(/un\w*ing\b/) passes. If the test included the word bunting or misunderstanding, this would not pass. Only text.scan(/\bun\w*ing\b/) would pass.

should the digit in eq(6) be eq(5) since there are only 5 words in the test string which are five letters long

/^[aeiouAEIOU]\w+/ Is the solution provided for the starts_with_a_vowel method. This is not the correct regex for finding words that start with a vowel. That only checks if the first char in a string is a vowel.

PROBLEM: Lesson should include additional material on regular expressions. See issue #13.
NOTIFY: @joshuaneedham

On the solution branch, the method valid_phone_number hasn't been filled in.

The lessons for RegEx are good. They explain what it is and the different ways to use it in ruby. However, when you get to the lab, it is very tough to use what was learned in readings to get through the lab. I utilized different resources from Google to the AAQ forum on the lab. I passed but it took a while due to not fully understanding what needed to be done within the code. Maybe add a few more lessons and a deeper explanation of the functionality of the regex and how to utilize it within ruby.

Just a thought!

I found this lab to be a bit difficult based on the information and resources provided. May want to consider including more information about things like the * . + operators which were mentioned in the regex basics objectives section but not mentioned in the content. Providing a couple of different examples that include ? true : false may also be beneficial as a refresher to get us all thinking about other ways to solve.

The current test iterates over an array of phone numbers and expects calls to #valid_phone_number with each number to return false. The problem with this is that there are valid phone numbers in the array which would cause the test fail.

@AnnJohn @jmburges @StevenNunez

no solution method defined for valid_phone_number? on the solution branch!

The negative test for the valid_phone_number? method can yield a false positive if matching on the pattern "/\D?\d{3}[\D\s]?\d{3}[\D\s]?\d{4}/". This returns "true" when the method is called on [in]valid_numbers[1] ("(718)891-13135"). Whereas, it should return "false", if the pattern is not something like "/\D?\d{3}[\D\s]?\d{3}[\D\s]?\d{4}/$".