Filter: Difference between revisions

=={{header|Vlang}}==

<lang vlang>fn reduce(mut a []int){

mut last := 0

for e in a {

if e%2==0 {

a[last] = e

last++

}

}

a = a[..last]

}

fn main() {

mut nums := [5,4,8,2,4,6,5,6,34,12,21]

even := nums.filter(it%2==0)

println('orig: $nums')

println('even: $even')

reduce(mut nums)

println('dest: $nums')

}</lang>

{{out}}

<pre>orig: [5,4,8,2,4,6,5,6,34,12,21]

even: [4, 8, 2, 4, 6, 6, 34, 12]

dest: [4, 8, 2, 4, 6, 6, 34, 12]</pre>