zechdrink / rails-mini-course-sprint1-mod1-student--starter

Ruby on Rails - Ruby & Ruby on Rails Basics - Ruby Basics - Project

Introduction

For today's challenge, you are going to set up some data and then use irb to perform some operations on that data.

In order to get started, you will first need to create a candidates.rb file. Inside that file, you will define three hashes: jane, sara, and jason. Each hash should contain all of the data as shown in the tables shown below:

jane:

key	value	value type
first_name	Jane	string
last_name	Doe	string
level	senior_level	symbol
age	30	integer
occupation	Software Developer	string
employed	true	boolean
current_salary	125,000.00	float
languages	Ruby, JavaScript, Go	array of strings

---

sara:

key	value	value type
first_name	Sara	string
last_name	Smith	string
level	mid_level	symbol
age	26	integer
occupation	Software Developer	string
employed	true	boolean
current_salary	80,000.00	float
languages	Ruby, Python	array of strings

---

jason:

key	value	value type
first_name	Jason	string
last_name	Gray	string
level	entry_level	symbol
age	23	integer
occupation	Student	string
employed	false	boolean
current_salary	0.00	float
languages	C++, Python	array of strings

---

Instructions

Step One - Data Setup

1. Create candidates.rb file.
2. Create 3 different hashes based on the table of data above and assign them to variables jane, sara, and jason (use symbol keys and no hashrockets).
3. Paste all three hashes being assigned to variables into irb.
4. Call each variable to make sure it exists and is assigned to the correct hash.
5. Create an array named candidates that contains the three hashes (jane, sara, and jason).

Step Two - Average Age

We need to provide some analytics to our HR department about our job candidates. They want the average age of our current candidate pool.

1. Define a method named average_age that accepts an argument named people.

   • The method should iterate over the list of people passed into it, extracting their age values using map.
   • The method should then use reduce to sum all the ages
   • Finally, it should divide that sum by the size of the original people list to determine the average age

2. The result must be the floating point fractional average age (the division cannot be based on integer only divison) of the people passed into the method.

3. Run your newly defined method against the candidates list in irb and paste your method and the result into a new average_age.rb file

Step Three - Language Screening

We need to be able to filter our list of candidates based on the language we are hiring for. We want to find which candidates would be a good match for an interview.

1. Define a method named language_screening that accepts two arguments: people (an array) and language (a string).

2. Return the members of the people list that know the language that was passed in.

   • the language comparisons should be case insensitive

3. Call the method with the following options and past your results and the method itself into a file named language_screening.rb.

   • language_screening(candidates, "Python")
   • language_screening(candidates, "GO")
   • language_screening(candidates, "javascript")