I have a whole bunch of arrays, each with integers as strings in slots 1 and 3 through 9, but in each array slot 2 has a time in it (as a string), in minutes:seconds. A sample array would look like this:
["1", "11:49", "345", "26", "123456", "23", "1", "0", "65"]
What I want to do is convert everything except the time into integers, and convert the time into an integer number of seconds. How would I go about this?
["1", "11:49", "345", "26", "123456", "23", "1", "0", "65"]
.map.with_index do |e, i|
if i == 1
m, s = e.scan(/\d+/)
m.to_i.*(60) + s.to_i
else
e.to_i
end
end
A slower but possibly more readable version sets the second element of a clone of your original array, then maps the to_i method
>> original = ["1", "11:49", "345", "26", "123456", "23", "1", "0", "65"]
>> a = original.clone
=> ["1", "11:49", "345", "26", "123456", "23", "1", "0", "65"]
>> m, s = a[1].split(":")
=> ["11", "49"]
>> a[1] = m.to_i * 60 + s.to_i
=> 709
>> a.map(&:to_i)
=> [1, 709, 345, 26, 123456, 23, 1, 0, 65]
In a function:
def f(array)
a = array.clone
m, s = a[1].split(":")
a[1] = m.to_i * 60 + s.to_i
a.map(&:to_i)
end
ifs within the loop. You could eliminate the need to clone with: def f(array); m, s = a[1].split(":").map(&:to_i); a = array.map(&:to_i); a[1] = m * 60 + s; a; end. Note "11:30".to_i => 11; i.e., it does not raise an exception.I would do it like this:
time_to_seconds = -> x {m,s=x.split(':').map(&:to_i);m*60+s}
my_array.map do |num|
num[':'] ? time_to_seconds[num] : num.to_i
end
