I am trying to loop through multiple statements, but want to go through each one once, example:
while count < 5 do
count+= (not sure if this how ruby increments counts)
puts "In condition one"
next if count > 1
puts "In condition two"
next if count > 1
#..
end
Update 1:
Thanks for the reply, what I'm trying to do is loop through an array and have each element of the array be applied to 10 different conditions. For example: array[has 100 elements] element 1 gets condition 1, element 2 goes on to condition 2, and so on. Since there are 10 conditions, the 11th element in the array would get condition 1 again, and so on (condition 1 condition 2 condition 3 ...)
Update 2:
Thanks again for taking the time to reply. I apologize that I'm not being very clear. The array contains em开发者_Python百科ails. I have 10 email servers and want to send the 200 emails I have in my array through each server (only 1 email per server). I hope that makes sense
If I'm reading you correctly, you want to send a large number of emails through a small number of servers while balancing the load. Try creating a class to manage the servers (here's the basic idea)
class ServerFarm
def initialize
@servers = []
end
attr_accessor :servers
def add_server(server)
@servers << server
end
def remove_server(x)
if x.is_a?(Numeric) then
@servers.delete_at(x)
elsif x.is_a?(Server)
@servers.delete(x)
end
end
def server_available?
@servers.each {|s| return true if s.available? }
false
end
def dispatch_message(email)
@servers.each_with_index {|s, i|
next unless s.available?
s.dispatch(email)
return i
}
nil
end
end
Now, all you will have to do is call ServerFarm.dispatch_message
for an email and it will be sent using one of the available servers. This class assumes that you have a class named Server
that holds the info for your individual servers, etc etc.
array = (1..100).to_a
conditions = (1..10).to_a
array.each_with_index do |elem, i|
puts "element %d, using condition %d" % [elem, conditions[i % conditions.length]]
end
produces
element 1, using condition 1
element 2, using condition 2
element 3, using condition 3
element 4, using condition 4
element 5, using condition 5
element 6, using condition 6
element 7, using condition 7
element 8, using condition 8
element 9, using condition 9
element 10, using condition 10
element 11, using condition 1
element 12, using condition 2
etc.
Does this help? I can't tell what you are trying to do.
5.times do |count|
puts 'In condition ' + %w(one two three four five)[count]
end
The 5.times do |count|
will excecute the block five times with count
starting at zero and incrementing each time. %w(one two three four five)
is the same as ["one", "two", "three", "four", "five"]
.
If you want to do five different things consecutively, you do not need a loop. Just put the statements in a row:
# do thing 1
# do thing 2
# do thing 3
# ...
Edit:
"I have an array that I want to loop through, but each element in the array needs to go through a different condition each time and then restart at the first condition."
To loop through an array endlessly, testing each element against conditions:
arr = ['sdfhaq', 'aieei', 'xzhzdwz']
loop do
arr.each do |x|
case x
when /..h/
puts 'There was a \'h\' at the third character.'
when /.{6}/
puts 'There were at least six characters.'
else
puts 'None of the above.'
end
end
end
Edit 2:
"Thanks for the reply, what I'm trying to do is loop through an array and have each element of the array be applied to 10 different conditions, example: array[has 100 elements] element 1 gets condition 1 element 2 goes on to condition 2 and so on, since there are 10 conditions the 11th element in the array would get condition 1 again and so on. condition 1 condition 2 condition"
You will need to use the %
method on numbers.
arr = Array.new(130) # an array of 130 nil elements.
num_conditions = 10
arr.each_with_index do |x, i|
condition = (i + 1) % num_conditions
puts "Condition number = #{condition}"
end
More information: http://ruby-doc.org/core/classes/Fixnum.html#M001059
Edit three:
def send_an_email(email, server)
puts "Sending an email with the text #{email.inspect} to #{server}."
end
email_servers = ['1.1.1.1', '2.2.2.2']
emails = ['How are you doing?', 'When are you coming over?', 'Check out this link!']
emails.each_with_index do |email, i|
send_an_email email, email_servers[i % email_servers.length]
end
You can modify email_servers
and emails
and have it still work, even if the lengths are changed.
array.each_slice(10) do |emails|
servers.zip(emails) { |server,email| server<<email }
end
(Ruby 1.9.2)
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