while in ruby code example

Example 1: for loop ruby

# You can use an each to mimic the functionality of a for loop

(0..5).each do |i|
  puts "Inside loop i = #{i}"
  # put your code for loop here
end

# outputs 
# Inside loop i = 0   
# Inside loop i = 1
# Inside loop i = 2
# Inside loop i = 3
# Inside loop i = 4
# Inside loop i = 5

Example 2: ruby for loop

for element in array do
  element.do_stuff
end

Example 3: rails loop

while $i < $num  do
   puts("Inside the loop i = #$i" )
   $i +=1
end