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#Lyrical Wordsmithery - using .select method

Part of Makers Academy's course is for newbie students to present a method, so by the end of the course we all have seen a bunch of ruby methods being used. I chose the .select method, here's a quick note on how I experimented with it.

.select

• Used for pulling out or selecting certain items based on some defined criteria

• Can be used on arrays or hashes

• It will run the block you want on every item of your object and return a new object that contains only those items that the original block returned true.

• Ruby Doc link for .select

Let's use the select method on an array (numbers 1 to 10) to return even numbers. Here's a simple array:

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

We can use the select method to passing a block to check if the number is even:

numbers.select{|num| num%2==0}

This returns the even numbers between 1-10

=> [2, 4, 6, 8, 10]

Arsenal FC chant:

"And it's Arsenal, Arsenal FC, We're by far the greatest team, The world has ever seen...."

Here's the chant as an array, using the .split method to convert a string to an array splitting where there are " " (spaces)

afc = ['And', 'its', 'Arsenal', 'FC, 'Arsenal, 'FC', 'We're, 'by, 'far', 'the', 'greatest', 'team', 'the', 'world', 'has', 'ever', 'seen']

Let's use select to return any words longer than 5 letters:

afc.select { |x| x.length > 5 }

And the longest words are...

=> ['Arsenal', 'Arsenal', 'greatest']

I'm gonna measure lyrical mastery using a pretty crap method, basically how many long words can they flow in a track? I created two arrays:

cream = an array with words of Wu-tang - C.R.E.A.M. as items
juicy = an array with words of Biggie - Juicy as items

Then used the select method to count how many words longer than 5 letters each contained.

def long_words(array)
  array.select{|word| word.length > 5}.size
end

Next, I compared this to how many words are in the lyrics to get a final LWP% ...and here are the results:

------------------------------------------------------
Wu-tang - C.R.E.A.M.

Word count: 745
Long words in lyrics: 168
Lyrical wordsmithery: 22.55%

------------------------------------------------------
The Notorious B.I.G. - Juicy

Word count: 677
Long words in lyrics: 129
Lyrical wordsmithery: 19.05%

lyrical_wordsmithery.rb

Wu-tang win.

The Wu is coming through, the outcome is critical