lo.Ternary crash with varags

[moneyease]

Test code

https://go.dev/play/p/LIx60Wu_tT9

As expected it should work.

[CosmicPredator]

Since you are passing a[0] as parameter, It gets evaluated at runtime even though the condition is false. One fix is to not use ternary operator and directly use if { } else { } or you can use lo.TernaryF like this,

func foo(a ...string) string {
    predicate := len(a) == 1
    return lo.TernaryF(predicate, func() string { return a[0] }, func() string { return "" })
}