Another (simple!) eval question!

greetings Rubyists,

Still trying to wrap my head around metaprogramming.

def analyze(args)

stuff

total is defined up here and is equal to some amount of seconds

elapsed (say 100,000)

day, hour, min = 0, 0, 0
loop do day += 1; total -= 86400; break if total < 0; end; day -= 1;
total += 86400
loop do hour += 1; total -= 3600; break if total < 0; end; hour -=
1; total += 3600
loop do min += 1; total -= 60; break if total < 0; end; min -= 1;
total += 60

puts “your total is #{day} days, #{hour} hours, #{min} mins,
#{total} secs”
end

as you can see, i’d like to refactor that so i just have to
dotime( :day, 86400 )
dotime( :hour, 3600 )
dotime( :min, 60 ) (i can hardcode ‘total’ in the
function, doesn’t matter?)

But no eval I use works, either the eval isn’t defined for my class
(assume main:Object) or I get "no method for + (nilpointer). I read
about how you shouldn’t use string eval, etc. A simple pointer to
some help would be awesome! Thanks guys.

PS, if a time function does this, don’t spoil the metaprogramming for
me? I’d like to learn anyway. :slight_smile:

-Mike

2007/10/23, mouse_059 [email protected]:

loop do day += 1; total -= 86400; break if total < 0; end; day -= 1;
as you can see, i’d like to refactor that so i just have to
PS, if a time function does this, don’t spoil the metaprogramming for
me? I’d like to learn anyway. :slight_smile:

I have no idea why you think there should be an eval in there.

What I’d do: I’d put sizes into an array and use that together with
modulus calculations to split up seconds into years, months, days etc.

Kind regards

robert

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