# result/traverse Map a Result-returning function over a collection, short-circuiting on the first Err. ## Syntax 
[result/traverse $coll $f]
`$f` maps each item to a Result. ## Examples 
[result/traverse @{ 1 2 3 } {|n| [ok ($n * 2)]}]   # Ok(@{ 2 4 6 })
[result/traverse @{ 1 -1 2 } {|n|
    if ($n < 0) { [err "negative"] } { [ok $n] }
}]   # Err("negative")  (stops at first Err)
## Returns Result — `Ok([values])` if every call succeeded, or the first Err. ## See Also `result/sequence`, `result/map`, `and-then`, `ok`
← result/sequence