I want to skip iteration for few values depending on dynamic condition.
Say I have a persons array [1,2,3,4,5,6,7,8] and while iterating if the
one of the values equals 2, then it should skip iteration for the next
two values (in this case it is 3 and 4)
I want to skip iteration for few values depending on dynamic condition.
Say I have a persons array [1,2,3,4,5,6,7,8] and while iterating if the
one of the values equals 2, then it should skip iteration for the next
two values (in this case it is 3 and 4)
In this case the output should be: [1,2,5,6,7,8]
persons = [1,2,3,4,5,6,7,8]
persons.each do |x|
if x == 2
the next x value should be 5 in my case
end
p x
end
How can I do it in Ruby ?
Okay! So do you want the original array intact or output to hold in a
different array?
I want to skip iteration for few values depending on dynamic condition.
Say I have a persons array [1,2,3,4,5,6,7,8] and while iterating if the
one of the values equals 2, then it should skip iteration for the next
two values (in this case it is 3 and 4)
In this case the output should be: [1,2,5,6,7,8]
try manual iteration, ri next
eg,
$ cat test.rb
people = (1…30).each
skippers = [2,10]
loop do
person=people.next rescue exit
if skippers.include? person
person.times{person = people.next}
next
end
Can you explain the dynamic condition? Your example has been solved by
a number of people for an equality test, but do you require something
more complicated? #reject will probably get you most of the way there,
but there may be other ways of approaching the problem if ‘dynamic’ is
something involving expensive operations, possible exceptions (integer
overflowif 2**x> 100could be a problem), etc.
I want to skip iteration for few values depending on dynamic condition.
Say I have a persons array [1,2,3,4,5,6,7,8] and while iterating if the
one of the values equals 2, then it should skip iteration for the next
two values (in this case it is 3 and 4)
irb(main):011:0> show = -1
=> -1
irb(main):012:0> persons.each_with_index {|x, i| show = i + 2 if x ==
2; puts x if i > show}
1
5
6
7
8
=> [1, 2, 3, 4, 5, 6, 7, 8]
or
irb(main):013:0> persons.inject(0) {|miss, x| if x == 2 then 2 else
puts x if miss <= 0; miss - 1 end}
1
5
6
7
8
=> -4