For...in loop
In this article, we are going to learn about "For" loop its well known loop, and used in almost every programming language. Here is how it works in Ruby
# For loop is used to do something repeatedly
for i in 0..5
puts "This is Value of i: #{i} "
end
In this example we are printing a message for 6 times, which is the loop starts at 0 and ends at 5 ..
Prints message containing the value of "i" ..
Lets take another example.
and use a conditional statement inside for...in loop.
for i in 0..10
if i > 2 then
break
end
puts "Value of 'I' is: #{i}"
end
Note in this example. we have created a loop that had to print a message 11 times.. because
we specifed, it to go from 0 to 10 ..
but it prints only 3 lines.. that because of conditional statement and the "break" statement.
Break statement is used to break a loop at any point of time ...
now the fun example :)
Give vote up on bilal's latest 11 posts :) only if Steem power is greater than 10,000
steem_power = 50000
account_name = "bilal-haider"
vote_on_all_posts = true
for i in 0..10
if vote_on_all_posts && account_name == "bilal-haider" && steem_power >= 10000 then
puts "Vote given for post #{i}"
end
end
In this lecture you guys have learned on how to use for .. in loop. and also learned how to write break statement
, combining the knowledge of writing conditional statements with loops :)