Can anyone explain me for loops in Ruby

Answer 1

Try to repeat SoloLearn's Ruby course, chapter Control Structures > For loops.
If you have further questions, please tell us exactly what your problem is.

Answer 2

thanks

Answer 3

A for loop is like a while loop spot the difference here:

while loop:

x = 0
while x < 10
x += 1
puts x
end

for loop:

x = 0
for x in 100
x += 1
puts x
end

I'm not sure to my answer but I think this is right

Answer 4

@MrCoder there are other differences, as for iterates over something. e.g. you can say

for i in (5..100)
puts i
end

this puts out the numbers 5-100 because it iterates over the range (5..100)

you can also iterate over an array, for example

arr = ["ThingA", "ThingB", "ThingC"]

for i in arr
puts i
end

will output:

ThingA
ThingB
ThingC

basically, for reassigns i to the next element of the array/range/hash/whatever each time the loop repeats. when it reaches the end, it stops.