println(firstindex(rand(
1
,
2
,
3
,
4
),
1
))
println(firstindex(rand(
1
,
2
,
3
,
4
),
2
))
println(firstindex([
1
,
2
,
3
],
2
))
println(firstindex([
2
4
;
6
8
],
2
))
println(firstindex([
2
;
4
;
6
;
8
],
2
))
println(firstindex(cat([
1
2
;
3
4
], [
5
6
;
7
8
], [
2
2
;
3
4
], dims
=
3
);))