Foreach #

For loops allow to iterate over different sets of data and perform actions based on them.

// read a file with numbers in it (file content will always be represented by strings)
// .lines() splits the lines of the file into an array
input = open("examples/aoc/2021/day-1/input").lines()

// define temporary array
a = []

foreach i, number in input
  // read each line into temporary array and cast it into an integer
  a.yoink(number.strip().plz_i())
end

// assign temporary array to input array
input = a

Count form zero to a given number (excluding):

🚀 > foreach i in 5
  puts(i)
end

0
1
2
3
4
=> 5

Iterate over a string:

🚀 > foreach i in "test" 
  puts(i)
end

"t"
"e"
"s"
"t" 
=> "test"

It is possible to use next or break inside a loop. Both cane take one argument which will returned, otherwise nil will be returned.

foreach i in 5
  if (i == 2)
    next
  end
  puts(i)
end

foreach i in 5
  if (i == 2)
    break
  end
  puts(i)
end

// Returns
0
1
3
4
0
1
nil