func (ctx *Context) QueryFloat64(name string) float64 {
	v, _ := strconv.ParseFloat(ctx.Query(name), 64)
	return v
}
func (ctx *Context) QueryFloat64(name string) float64 {
	v, _ := strconv.ParseFloat(ctx.Query(name), 64)
	return v
}
// QueryFloat64 returns query result in float64 type.