20 lines
412 B
CoffeeScript
20 lines
412 B
CoffeeScript
nums: i * 3 for i in [1..3]
|
|
|
|
negs: x for x in [-20..-5*2]
|
|
negs: negs[0..2]
|
|
|
|
result: nums.concat(negs).join(', ')
|
|
|
|
ok result is '3, 6, 9, -20, -19, -18'
|
|
|
|
# Ensure that ranges are safe. This used to infinite loop:
|
|
j = 5
|
|
result: for j in [j..(j+3)]
|
|
j
|
|
|
|
ok result.join(' ') is '5 6 7 8'
|
|
|
|
# With range comprehensions, you can loop in steps.
|
|
results: x for x in [0..25] by 5
|
|
|
|
ok results.join(' ') is '0 5 10 15 20 25' |