Dividing inside iterations?

[Dominic Son]

Hi

Learning Ruby.

Is it possible to divide values while inside an iteration?

for example i'd like to do something like this:

h = [40,20,50,200]
h.each do |num,total| num / 24 = total
print "#{total} \n" end

as you'd expect, there is an error because of that '/' and '=' sign in
this iterator.

so since this isn't possible what would be the best way to do what i'm
trying to do? or perhaps my syntax is wrong

thank you very much.

Dominic

 

[Dominic Son]

Thanks for your quick reply Joey.

But it turns out you were wrong.

jk. it worked.

Thanks again man.

Dominic Son

Yes, but in assignement the variable goes on the left.
h = [40,20,50,200]
h.each do |num,total|
total = num / 24
print "#{total} \n"
end

j`ey
http://www.eachmapinject.com

 

[dblack]

Hi --

Yes, but in assignement the variable goes on the left.
h = [40,20,50,200]
h.each do |num,total|

The "total" there doesn't do anything; you'd just want:

h.each do |num|

total = num / 24
print "#{total} \n"

Of course this could also be:

puts num / 24




David

end

j`ey
http://www.eachmapinject.com

Hi

Learning Ruby.

Is it possible to divide values while inside an iteration?

for example i'd like to do something like this:

h = [40,20,50,200]
h.each do |num,total| num / 24 = total
print "#{total} \n" end

as you'd expect, there is an error because of that '/' and '=' sign in
this iterator.

so since this isn't possible what would be the best way to do what i'm
trying to do? or perhaps my syntax is wrong

thank you very much.

Dominic

--
http://www.rubypowerandlight.com => Ruby/Rails training & consultancy
http://www.manning.com/black => RUBY FOR RAILS (reviewed on
Slashdot, 7/12/2006!)
http://dablog.rubypal.com => D[avid ]A[. ]B[lack's][ Web]log
(e-mail address removed) => me

 

[dblack]

Hi --

Of course this could also be:

puts num / 24

Or:

h = [40,20,50,200]
h.map{|num|num/24}.each do |num|
puts num
end

Or:

puts [40,20,50,200].map {|num| num/24 }


David

--
http://www.rubypowerandlight.com => Ruby/Rails training & consultancy
http://www.manning.com/black => RUBY FOR RAILS (reviewed on
Slashdot, 7/12/2006!)
http://dablog.rubypal.com => D[avid ]A[. ]B[lack's][ Web]log
(e-mail address removed) => me