Ruby best practices

Question 1

simplify this if statement:
if condition
#do_something
en

Answer 1

do_something if condition

Question 2

write this if in the ternary way:
if 5>3
  puts "This is true"
else
  puts "Nope!"
end

Answer 2

puts 5>3 ? “This is true” : “Nope!”

Question 3

how do you refactor a log elsif statement with a lot of conditions:

Answer 3

with the case condition statement, here is an example:

case greeting 
when "English"
    puts "Hello!"
when "French"
    puts "Bonjour!"
when "German"
    puts "Guten Tag!"
when "Finnish"
    puts "Haloo!"
else
    puts "I don't know that language!"
end

Question 4

assign the value 5 to the variable my_num if there is no other value already assigned

Answer 4

my_num ||= 5

Question 5

which value does a ruby function return if we did not explicitly mentioned the return?

Answer 5

it will return the last evaluated expression.

Question 6

how does respond_to work?

Answer 6

age = 26

age.respond_to?(:next)
#only takes a symbol

Question 7

how does the shovel works?

Answer 7

my_array = [1, 2, 3, 4]

my_array