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Interpolated strings must be enclosed in double quotes. The Ruby interpreter will not search for interpolated values in a string if single quotes are used:
ex. p 'hello #{3}'

Notice the decimal used in the assignment of the rate variable. Decimals in programming are called Floats.

Notice the usage of the _ in the assignment of the principal variable. Ruby allows an _ to be used in numbers for better readability. Although an _ can be placed anywhere in a number, the best practice is to place them where a comma would normally be placed. (e.g. 1_000_000).

IF EXAMPLE STATEMENT
def can_buy_apple_with?(money)
  if money > 5

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var Kata;

Kata = (function() {
  function Kata() {}

  Kata.getVolumeOfCuboid = function(length, width, height){return length * width * height};

  return Kata;

})();

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function gooseFilter (birds) {
  var geese = ["African", "Roman Tufted", "Toulouse", "Pilgrim", "Steinbacher"];
  
  //birds array argument is filtered to check if the birds array includes a string that is in geese
  //...if it isn't geese, return the string.
  
  let filteredBirds = birds.filter(newBirds => { 
    return !geese.includes(newBirds)
  })
  console.log( filteredBirds)

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const check = (array,xValue) => {
  return array.includes(xValue)
} 

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const maps = (arrayOfInts) => {
  return arrayOfInts.map( multiplied => multiplied * 2 )
}

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# Select all columns for all employees
company_database> SELECT * FROM employees                                       
+------+--------------+----------+------------+-------------------+-------------
| id   | full_name    | salary   | position   | phone_extension   | part_time   
|------+--------------+----------+------------+-------------------+-------------
| 1    | Jamie Smalls | 38293    | <null>     | x334              | False       
| 2    | Jake William | 3992     | Driver     | x429              | True        
| 3    | Casem Casey  | 49292    | Accountant | x596              | False       
+------+--------------+----------+------------+-------------------+-------------
SELECT 3

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# Gavin Stark Psuedo Code
# 1. We remember that a is 1
# 2. We remember that b is 100
# 3. We remember that z is 0
# 4. We tell the user we are going to
#    guess a number between "a" and "b"
# 5. User chooses number
# 6. We remember our guess is (a+b) / 2
# 7. Tell the user that we are guessing the number "guess"
# 8. User chooses yes, no