Bug Description

The function SetValWithStruct() sets values using structs. It skips zero values, such as 0 and false. However, if the fields are slices (excluding bool slices), all the values in the slices will be set.

How to Reproduce

To reproduce the bugs, we can simply add a test in client/request_test.go:

func TestSetValWithStructForSlices(t *testing.T) {
	p := &QueryParam{
		Args: fasthttp.AcquireArgs(),
	}
	SetValWithStruct(p, "param", struct {
		TZeroInt   int
		TInt       int
		TIntSlice  []int
		TBoolSlice []bool
	}{
		TZeroInt:   0,
		TInt:       1,
		TIntSlice:  []int{0, 1, 2},
		TBoolSlice: []bool{true, false},
	})

	fmt.Println(string(p.Peek("TZeroInt")))
	fmt.Println(string(p.Peek("TInt")))
	for _, v := range p.PeekMulti("TIntSlice") {
		fmt.Print(string(v), ", ")
	}
	fmt.Println()
	for _, v := range p.PeekMulti("TBoolSlice") {
		fmt.Print(string(v), ", ")
	}
	fmt.Println()
}

cd client
go test --run TestSetValWithStructForSlices -v

result:

1
0, 1, 2, 
true,

Expected Behavior

1
1, 2, 
true,

The SetValWithStruct() should skip 0 in the int slice too.

Fiber Version

latest

Code Snippet (optional)

No response

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